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How many insulator disc used for 33 kV transmission voltage line?
asked
Dec 5, 2017
by
anonymous
How many insulator disc used for 33 kV transmission voltage line?
transmission
insulator
discs
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1
Answer
answered
Dec 6, 2017
by
jihadio k jeeja
5,As 33kv is Vrms
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Related questions
asked
May 8, 2018
by
anonymous
The number of insulator discs (each rated 11 kV) required in a suspension type insulator string
The number of insulator discs (each rated 11 kV) required in a suspension type insulator string of 220 kV line is
Last answer:
The number of insulator discs (each rated 11kV) required in a suspension type insulator string of 220 kV line is 16
insulator
discs
suspension
type
string
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202
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1
answer
asked
May 3, 2018
by
anonymous
A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of
A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of
Last answer:
A transmission line has 1 P.0 impedance on a base of 11 KV, 100 MVA. On a base of 55 KV. it will have a P.0 impedance of 0.02 P.U
transmission
line
impedance
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359
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1
answer
asked
May 8, 2018
by
anonymous
In a transmission line if booster transformers are to be used, preferred location will be
In a transmission line if booster transformers are to be used, preferred location will be (A) At the receiving end (B) At the sending end (C) At the intermediate point (D) Anywhere in the line
Last answer:
In a transmission line if booster transformers are to be used, preferred location will be At the intermediate point
transmission
line
booster
transformers
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208
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1
answer
asked
Jun 29, 2019
by
anonymous
How does the resistance of a conductor compare to that of an insulator?
How does the resistance of a conductor compare to that of an insulator?
Last answer:
The resistance of a conductor can be significantly lower than the resistance of an insulator, depending on each material's atomic properties.
how
does
the
resistance
of
a
conductor
compare
to
that
an
insulator
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1
answer
asked
Apr 28, 2018
by
anonymous
The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph,
The sending end and receiving end voltages of a three-phase transmission line are 10 kV/ph and 9.5 kV/ph, respectively. If the resistance drop is 150 V/ph and receiving end power factor is 0.8, the sending end power factor is (A) 0.745 lagging (B) 0.775 lagging (C) 0.8 lagging (D) 0.85 lagging
Last answer:
Vscos¢s-Vrcos¢r=IR
sending
end
receiving
voltages
three-phase
transmission
line
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2
answers
asked
May 8, 2018
by
anonymous
Stability of a transmission line can be increased by
Stability of a transmission line can be increased by
Last answer:
Stability of a transmission line can be increased by Shunt capacitor, Series capacitor
stability
transmission
line
increased
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261
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1
answer
asked
Sep 20, 2018
by
anonymous
State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection
State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection
Last answer:
i) Function of Cable box: To hold and inspect incoming and outgoing terminals ii) Function of Guard wire : A grounded conductor placed beneath an overhead transmission line in order to ground ... in service connection: To give mechanical Support to pole, line and prevent leakage current if any
cable
box
guard
wire
shackle
insulator
stay
used
service
connection
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87
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1
answer
asked
May 8, 2018
by
anonymous
If 3000 kW power is to be transmitted over a distance of 30 km, the desirable transmission voltage will be.
If 3000 kW power is to be transmitted over a distance of 30 km, the desirable transmission voltage will be. (A) 11 kV (B) 33 kV (C) 66 kV (D) 132 kV
Last answer:
By
transmission
voltage
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2
answers
asked
Jun 29, 2019
by
anonymous
What is another name for an insulator?
What is another name for an insulator?
Last answer:
Dielectric material is another name for an insulator.
what
is
another
name
for
an
insulator
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1
answer
asked
Apr 29, 2018
by
anonymous
The voltages across various discs of suspension insulators having identical discs are different due to:
The voltages across various discs of suspension insulators having identical discs are different due to: (A) Surface leakage currents (B) Series capacitance of lines (C) Shunt capacitance to ground (D) Series and shunt capacitances
Last answer:
The voltages across various discs of suspension insulators having identical discs are different due to: Shunt capacitance to ground
voltages
suspension
insulators
discs
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79
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1
answer
asked
May 22, 2018
by
anonymous
What type of insulator will be used if the direction of the transmission line is to be changed?
What type of insulator will be used if the direction of the transmission line is to be changed?
Last answer:
Suspension type of insulator will be used if the direction of the transmission line is to be changed.
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111
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1
answer
asked
Apr 28, 2018
by
anonymous
If a 5-bus test system contains 6 transmission lines and one transformer, how many non- zero elements are
If a 5-bus test system contains 6 transmission lines and one transformer, how many non-zero elements are there in the system Y-bus ? (A) 25 (B) 12 (C) 11 (D) 19
Last answer:
If a 5-bus test system contains 6 transmission lines and one transformer, 19 non-zero elements are there in the system Y-bus.
test
system
contains
transmission
lines
transformer
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1
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asked
Aug 15, 2019
by
anonymous
What is difference between Conductor and insulator ?
What is difference between Conductor and insulator ?
Last answer:
Conductor is a material that offers no resistance to the flow of current, while an insulator is a material that offers total resistance to the flows of current, It doesn't allowed any flows of current.
conductor
insulator
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47
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1
answer
asked
Apr 28, 2018
by
anonymous
A suspension type insulator has 2 units with self capacitance C and ground capacitance of 0.2 C. Each unit can
A suspension type insulator has 2 units with self capacitance C and ground capacitance of 0.2 C. Each unit can withstand for a maximum voltage of 11 kV. Its string efficiency is (A) 78% (B) 82% (C) 80% (D) 84%
suspension
type
insulator
self
capacitance
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answers
asked
Mar 11, 2018
by
anonymous
What is the difference between an insulator and a dielectric?
What is the difference between an insulator and a dielectric?
Last answer:
Dielectric is the another name for insulator.
difference
between
insulator
dielectric
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91
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1
answer
asked
Aug 14, 2017
by
anonymous
what is insulator ?
what is insulator ?
Last answer:
A material that does not allow the flow of current or heat.
insulator
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108
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3
answers
asked
Apr 29, 2018
by
anonymous
Series capacitive compensation in EHV transmission line is used to
Series capacitive compensation in EHV transmission line is used to
Last answer:
To maintain voltage stability
series
capacitive
compensation
ehv
transmission
line
used
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338
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2
answers
asked
Apr 30, 2018
by
anonymous
For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is
For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is
Last answer:
For a short transmission line with r/x ratio of is 1.0, the regulation will be zero when the load power factor is 0.707 lead
short
transmission
line
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128
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1
answer
asked
Mar 20, 2018
by
anonymous
Which relay is preferred for phase fault on short transmission line?
Last answer:
Reactance relay is preferred for phase fault on short transmission line.
relay
phase
fault
short
transmission
line
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91
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1
answer
asked
Mar 10, 2018
by
anonymous
Why high voltage is used in power transmission?
Why high voltage is used in power transmission?
Last answer:
The primary reason that power is transmitted at high voltages is to increase efficiency. ... The lower current that accompanies high voltage transmissionreduces resistance in the conductors aselectricity flows ... This means that thin, light-weight wires can beused in long-distance transmission.
high
voltage
power
transmission
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5.2k
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2
answers
asked
May 8, 2018
by
anonymous
In which of the following transmission lines, the value of the Shunt admittance should be
In which of the following transmission lines, the value of the Shunt admittance should be approximated to zero ? (A) A 66 kV 35 km long line (B) A 132 kV 200 km long line (C) A 220 kV 300 km long line (D) A 400 kV 500 km long line
Last answer:
In which of the following transmission lines, the value of the Shunt admittance should be approximated to zero ? (A) A 66 kV 35 km long line (B) A 132 kV 200 km long line (C) A 220 kV 300 km long line (D) A 400 kV 500 km long line
transmission
lines
shunt
admittance
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445
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1
answer
asked
May 8, 2018
by
anonymous
In case the height of transmission tower is increased, which of the following parameter is likely to change?
In case the height of transmission tower is increased, which of the following parameter is likely to change? (A) Resistance (B) Inductance (C) Capacitance (D) None of the above
Last answer:
In case the height of transmission tower is increased, which of the following parameter is likely to change? (A) Resistance (B) Inductance (C) Capacitance (D) None of the above
transmission
tower
parameter
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221
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1
answer
asked
May 1, 2018
by
anonymous
The purpose of guard ring in transmission lines is to
The purpose of guard ring in transmission lines is to (1) reduce the earth capacitance of the lowest unit. (2) increase the earth capacitance of the lowest unit. (3) reduce the transmission lines losses. (4) reduce the reactance of the line
Last answer:
The purpose of guard ring in transmission lines is to reduce the earth capacitance of the lowest unit.
guard
ring
transmission
lines
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1.1k
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1
answer
asked
May 22, 2018
by
anonymous
In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required?
In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required?
Last answer:
In case of a ‘High Voltage DC’ transmission, how many minimum conductors are required? one
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135
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1
answer
asked
May 22, 2020
by
anonymous
State the limitations of EHVAC transmission line.
State the limitations of EHVAC transmission line.
Last answer:
Following are the Limitations of EHVAC Transmission: 1. Insulation cost increases as voltage increases 2. Skin effect is more 3. Proximity effect is more. 4. Corona loss increases. 5. Radio ... 18. EHVAC is economical only for bulk amount of power is to be transmitted over long distance.
ehvac
transmission
line
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81
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1
answer
asked
May 22, 2020
by
anonymous
State line parameters of transmission line.
State line parameters of transmission line.
Last answer:
Following are the of Line parameters of transmission line: 1. Resistance 2. Inductance 3. Capacitance
line
parameters
transmission
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33
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1
answer
asked
May 6, 2020
by
anonymous
State the impact of inductance and resistance on transmission line performance
State the impact of inductance and resistance on transmission line performance
Last answer:
Impact of inductance on transmission line: 1) It causes IXL drop in transmission line which affects regulation. 2) It is the only parameter which decides power transmission capacity of line i. ... is very small, it causes losses, temperature rise& poor voltage regulation so it cannot be neglected
state
the
impact
of
inductance
and
resistance
on
transmission
line
performance
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84
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1
answer
asked
Aug 25, 2019
by
anonymous
effect of inductance and capacitance on performance of transmission line.
effect of inductance and capacitance on performance of transmission line.
Last answer:
Following are the effect on performance of transmission line: 1. Due to inductance (L) voltage drop in transmission line produces. 2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.
inductance
capacitance
performance
transmission
line
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77
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1
answer
asked
Aug 25, 2019
by
anonymous
While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method.
While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method.
Last answer:
(i) Assumptions are made in case of Nominal 'T' Method: a. It is assume that line capacitance is connected at center of transmission line. b. It is assume that half ... assumed that transmission line resistance & reactance per phase is connected in between two half transmission line capacitance
medium
transmission
line
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70
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1
answer
asked
Aug 25, 2019
by
anonymous
HVDC transmission line in India:
HVDC transmission line in India:
Last answer:
HVDC transmission line in India: S.N . From To Voltage 1 Rihand (U.P) (from 1990) Dadri +- 500 KV (bipolar) 2 Talcher- is the biggest ... (Chandrapur) Western Region 140KV 8 Connecting Southern region(Vizag- Gajuwaka) Eastern Region 140KV
hvdc
transmission
line
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74
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1
answer
asked
Aug 25, 2019
by
anonymous
effect of line parameter on performance of transmission line.
effect of line parameter on performance of transmission line.
Last answer:
Following are the effect of line parameter on performance of transmission line: 1. Due to resistance (R), voltage drop in transmission line & copper losses in transmission line ... transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.
transmission
line
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45
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1
answer
asked
Aug 18, 2019
by
anonymous
Why is transmission line 11kV, 33kV 66kV Not Is 10kV, 20kV, 30kV ?
Why is transmission line 11kV, 33kV 66kV Not Is 10kV, 20kV, 30kV ?
Last answer:
10kv plus to compensate losses in olden days 1kv were added and transmitted. Since all equipment used for transmission have a multiple of 11 from olden days, still that is being followed even though the losses are ... voltages, multiples of 11 is eazy for winding ratios.. i.e. 11kv to 33kv is 1:3.
transmission
line
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158
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3
answers
asked
Jun 18, 2018
by
anonymous
A 50Ω transmission line is terminated in an impedance of 20-j50. What will be the reflection coefficient?
A 50Ω transmission line is terminated in an impedance of 20-j50. What will be the reflection coefficient? A) 0.69 B) 1.69 C) 6.9 D) 16.9
Last answer:
A 50Ω transmission line is terminated in an impedance of 20-j50. What will be the reflection coefficient? A) 0.69 B) 1.69 C) 6.9 D) 16.9
transmission
line
terminated
impedance
reflection
coefficient
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241
views
1
answer
asked
May 8, 2018
by
anonymous
The sag of a transmission line is least affected by
The sag of a transmission line is least affected by (A) Self weight of the conductor. (B) Temperature of the surrounding air. (C) Current through the conductor. (D) Ice deposited on the conductor.
Last answer:
The sag of a transmission line is least affected by Current through the conductor.
sag
transmission
line
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100
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1
answer
asked
Apr 29, 2018
by
anonymous
A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km
A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km
Last answer:
A transmission line of 200 km has a certain A, B, C and D parameters. If the length is reduced to 60 km A increases, B decreases
transmission
line
parameters
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91
views
1
answer
asked
Apr 26, 2018
by
anonymous
Transmission efficiency of a transmission line increases with the
Transmission efficiency of a transmission line increases with the
Last answer:
Transmission efficiency of a transmission line increases with the increase in power factor and voltage
transmission
efficiency
line
increases
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67
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1
answer
asked
Mar 20, 2018
by
anonymous
When a wave propagates on a transmission line, it suffers reflection several times at?
Last answer:
When a wave propagates on a transmission line, it suffers reflection several times at sending and other end.
propagates
transmission
line
suffers
reflection
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89
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1
answer
asked
Mar 20, 2018
by
anonymous
The interaction between a transmission line and communication line is minimized by?
Last answer:
The interaction between a transmission line and communication line is minimized by transposing transmission as well as communication lines, increasing the height of the transmission line tower, increasing the distance between the two lines.
interaction
between
transmission
line
communication
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116
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1
answer
asked
Mar 20, 2018
by
anonymous
When a transmission line is energized, the wave that propagates on it is?
Last answer:
When a transmission line is energized, the wave that propagates on it is current wave and voltage wave.
transmission
line
energized
wave
propagates
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105
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1
answer
asked
Mar 19, 2018
by
anonymous
A transmission line is protected by?
Last answer:
A transmission line is protected by distance protection, time graded and current graded overcurrent protection.
transmission
line
protected
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57
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1
answer
asked
Mar 10, 2018
by
anonymous
What are the losses in a transmission line?
What are the losses in a transmission line?
losses
transmission
line
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50
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0
answers
asked
Aug 18, 2017
by
anonymous
what is mean by medium transmission line ?
what is mean by medium transmission line ?
Last answer:
The transmission line which have length between 80 km to 250 km is known as medium transmission line.
medium
transmission
line
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82
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1
answer
asked
Aug 18, 2017
by
anonymous
what is mean by short transmission line ?
what is mean by short transmission line ?
Last answer:
The transmission lines which have length less than 80 km is known as short transmission lines.
short
transmission
line
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89
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1
answer
asked
Aug 18, 2017
by
anonymous
what is mean by long transmission line ?
what is mean by long transmission line ?
Last answer:
The transmission line which have length more than 250 km are known as long transmission lines.
long
transmission
line
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1
answer
asked
Mar 27, 2018
by
anonymous
A 100 km transmission line is designed for a nominal voltage of 132 kV and consists of one
A 100 km transmission line is designed for a nominal voltage of 132 kV and consists of one conductor per phase. The line reactance is 0.726 ohm/km. The static transmission capacity of the line, in MW, would be (a) 240 (b) 132 (c) 416 (d) 720
Last answer:
A 100 km transmission line is designed for a nominal voltage of 132 kV and consists of one conductor per phase. The line reactance is 0.726 ohm/km. The static transmission capacity of the line, in MW, would be 240
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707
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1
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asked
May 26, 2018
by
anonymous
The main consideration for operating transmission line at high voltage is
The main consideration for operating transmission line at high voltage is (a) to increase efficiency only. (b) to reduce power loss only. (c) to increase power transmission capability only. (d) All of the above
Last answer:
to reduce power loss: this is because when power is generated, it is generated at a very low voltage but because it is going to be transported over a long distance it is needed to be increase in order to avoid losses on the way such as copper loss and Eddy loss.
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1
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asked
May 26, 2018
by
anonymous
Which of the following is used for power factor improvement in transmission line ?
Which of the following is used for power factor improvement in transmission line ? (a) Three phase induction (b) An overexcited three phase synchronous motor running on no load (c) Three phase AC series motor (d) Choke
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asked
May 22, 2020
by
anonymous
State the effects of low power factor on efficiency and voltage regulation of short transmission lines.
State the effects of low power factor on efficiency and voltage regulation of short transmission lines.
Last answer:
i) Effect of Low power factor on efficiency:- When power factor of load reduces current drawn by transmission line increases so copper losses in transmission line increases, hence transmission ... increases, so voltage drop in transmission line increases so regulation increases. (Become Poor)
power
factor
short
transmission
lines
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71
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1
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asked
May 22, 2020
by
anonymous
State the advantages of use of high voltage in transmission of Electric power.
State the advantages of use of high voltage in transmission of Electric power.
Last answer:
Advantages: 1. As Transmission voltage increases, current decreases. 2. As current decreases, cross section of conductor decreases. 3. As cross section of conductor decreases, its ... high voltage transmission line, successful interconnection of transmission line is possible than low voltage.
advantages
use
high
voltage
transmission
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asked
May 8, 2018
by
anonymous
The voltage of transmission can be regulated by
The voltage of transmission can be regulated by (A) Use of tap changing transformers (B) Switching in shunt capacitors at the receiving end during heavy loads (C) Use of capacitors to neutralize the effect of series reactance (D) Any of the above methods
Last answer:
The voltage of transmission can be regulated by (A) Use of tap changing transformers (B) Switching in shunt capacitors at the receiving end during heavy loads (C) Use of capacitors to neutralize the effect of series reactance (D) Any of the above methods
voltage
transmission
regulated
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