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Why high voltage can reduce power loss?
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asked
Mar 10, 2018
by
anonymous
Why high voltage can reduce power loss?
high
voltage
reduce
power
loss
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answered
Jul 31, 2018
by
anonymous
when voltage has increased due to reduced current flow, thus power loss given by ( I^2R) will be low due to reduced current(I^2) provided that resistance (R) is constant.
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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
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power
transmission
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Mar 10, 2018
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Why high voltage test is done?
Why high voltage test is done?
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voltage
test
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52
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Mar 20, 2018
by
anonymous
The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to?
Last answer:
The contacts of high voltage switches used in power system are submerged in oil. The main purpose of the oil is to extinguish the arc.
contacts
high
voltage
switches
power
system
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1
answer
asked
Mar 10, 2018
by
anonymous
How can power loss be reduced?
How can power loss be reduced?
power
loss
reduced
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asked
May 1, 2018
by
anonymous
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is (1) 141 (2) 92.3 (3) 9.23 (4) 1.41
Last answer:
An amplifier has a voltage gain of 120. To reduce distortion, 10% negative feedback is employed. The gain of the amplifier with feedback is 9.23
amplifier
voltage
gain
reduce
distortion
negative
feedback
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1
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asked
Mar 10, 2018
by
anonymous
How do you calculate power loss?
How do you calculate power loss?
calculate
power
loss
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asked
Mar 10, 2018
by
anonymous
What is Extra High Voltage?
What is Extra High Voltage?
extra
high
voltage
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asked
Mar 10, 2018
by
anonymous
What are the advantages of high voltage transmission?
What are the advantages of high voltage transmission?
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 ... line increases 12. As transmission voltage increases power handling capacity of transmission line increases
advantages
high
voltage
transmission
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asked
Mar 10, 2018
by
anonymous
What is a high voltage test?
What is a high voltage test?
high
voltage
test
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50
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asked
Mar 10, 2018
by
anonymous
What is considered low voltage and high voltage?
What is considered low voltage and high voltage?
low
voltage
high
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asked
Sep 22, 2018
by
anonymous
Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.
Explain the “mitigation of power theft” and “faulty meter replacement” for energy conservation techniques to reduce commercial losses.
Last answer:
Energy conservation techniques to reduce commercial losses: 1. Mitigation of Power Theft: Power theft being the most important issue which all of the service providing utilities ... agricultural sector. Prepaid meters may prove effective measures against unauthorized abstraction of energy.
mitigation
power
theft
faulty
meter
replacement
energy
conservation
techniques
reduce
commercial
losses
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1
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asked
Mar 10, 2018
by
anonymous
Why is it cheaper to transmit electrical energy at high voltage?
Why is it cheaper to transmit electrical energy at high voltage?
Last answer:
Because of the electrical energy was step upped by transformers the transformer have high efficiency than the electric energy is cheaper
cheaper
transmit
electrical
energy
high
voltage
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1
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asked
Mar 25, 2018
by
anonymous
In a circuit containing R, L and C, power loss can take place in?
In a circuit containing R, L and C, power loss can take place in?
Last answer:
In a circuit containing R, L and C, power loss can take place in R only.
power
loss
rlc
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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
Mar 21, 2018
by
anonymous
If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is?
Last answer:
If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is 10°.
capacitor
leads
voltage
loss
angle
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1
answer
asked
Mar 20, 2018
by
anonymous
The power loss is an important factor for the design of?
Last answer:
The power loss is an important factor for the design of transmission line.
power
loss
important
factor
design
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1
answer
asked
Aug 25, 2019
by
anonymous
Limitation and application of High Voltage DC (HVDC)
Limitation and application of High Voltage DC (HVDC)
Last answer:
Limitation and application of High Voltage DC (HVDC) : Limitation:- 1) It is difficult to step up and step down DC voltage like AC voltage. 2) Special cooling ... conventional/non-conventional) 12) Increasing existing grid utilization. 13) Interconnection of different grids or networks
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voltage
dc
hvdc
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1
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asked
May 8, 2018
by
anonymous
Step-down transformer converts high voltage and low current into:
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Last answer:
Step-down transformer converts high voltage and low current into: Low voltage and high current
step-down
transformer
converts
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voltage
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current
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1
answer
asked
Mar 21, 2018
by
anonymous
For measurements on high voltage capacitors, the suitable bridge is?
Last answer:
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measurements
high
voltage
capacitors
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Mar 10, 2018
by
anonymous
What is meant by extra high voltage transmission?
What is meant by extra high voltage transmission?
Last answer:
HT & LT two types transmission in industrial line
extra
high
voltage
transmission
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1
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asked
Sep 30, 2017
by
anonymous
does the high voltage side of Transformer winding have more number of turns?
Last answer:
yes High Voltage side of Transformer winding have more number of turns. and low voltage side of Transformer winding have less number of turns.
transformer
high
voltage
turns
winding
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1
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Apr 28, 2018
by
anonymous
In voltage source converter based HVDC transmission system the active power is controlled by changing
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system
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power
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1
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Mar 25, 2018
by
anonymous
Power factor of the system is kept high?
Power factor of the system is kept high?
Last answer:
Power factor of the system is kept high to reduce line losses, to maximise the utilization of the capacities of generators, lines and transformers, to reduce voltage regulation of the line.
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91
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1
answer
asked
Mar 20, 2018
by
anonymous
An induction motor has relatively high power factor at?
Last answer:
An induction motor has relatively high power factor at near full load.
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1
answer
asked
Mar 20, 2018
by
anonymous
For high value of diversity factor, a power station of given installed capacity will be in a position to supply?
Last answer:
For high value of diversity factor, a power station of given installed capacity will be in a position to supply more number of consumers.
high
value
diversity
factor
power
station
installed
capacity
position
supply
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96
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1
answer
asked
Mar 10, 2018
by
anonymous
What is a high tension power line?
What is a high tension power line?
Last answer:
High tension power line is a high voltage of 115 kv and power line is underground transimissio used by urbun areas
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tension
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line
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70
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2
answers
asked
Mar 10, 2018
by
anonymous
What is the advantage of high power factor?
What is the advantage of high power factor?
Last answer:
Reduced copper losses Smaller conductor size Improve voltage regulation Increase system capability Less energy bill
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high
power
factor
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76
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answers
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Dec 7, 2017
by
anonymous
Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.
Justify. Power MOSFET is operated at high enough gate source voltage to minimize the conduction losses.
Last answer:
MOSFET is metal oxide field effect transistor. MOSFET is a voltage controlled device. MOSFET is majority carrier device. MOSFET are of two one is n-channel MOSFET and p-channel MOSFET. Gate, ... . Hence, power MOSFET is operated at high enough gate-source voltage to minimize the conduction losses.
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power
gate
source
voltage
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1
answer
asked
Mar 17, 2018
by
anonymous
The magnetic factor required to reduce the residual magnetization zero is called?
The magnetic factor required to reduce the residual magnetization zero is called?
magnetic
factor
reduce
residual
magnetization
zero
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answers
asked
Dec 5, 2017
by
bhanuprakash
according to ohms law voltage directly proportional to current but it is reverse in transformer why?
About trnsformer
Last answer:
Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer
voltage
current
power
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99
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1
answer
asked
Mar 10, 2018
by
anonymous
Why does increase in current mean a decrease in voltage?
Why does increase in current mean a decrease in voltage?
Last answer:
This is because current flows from high potential to low potential to bring the two diffrent potential to unity , thus a reduced potential (voltage)
increase
current
decrease
voltage
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145
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1
answer
asked
Mar 21, 2020
by
anonymous
Find power delivered by voltage source
Last answer:
Find power delivered by voltage source
find
power
delivered
by
voltage
source
transformation
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40
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1
answer
asked
Jun 29, 2019
by
anonymous
Is the power line voltage available in our homes a dc or an ac voltage?
Is the power line voltage available in our homes a dc or an ac voltage?
Last answer:
The power line voltage available in our homes is AC. Mobile dwellings are the most commonly DC-supplied homes and even then they tend to include AC supply for heavier loads.
is
the
power
line
voltage
available
in
our
homes
a
dc
or
an
ac
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1
answer
asked
Jun 18, 2018
by
anonymous
An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to
An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to a load impedance ZL when A) ZL = R B) ZL = jXS C) ZL = R-jXS D) ZL = R+jXS
Last answer:
An independent voltage source in series with an impedance ZS=R+jXS delivers a maximum average power to a load impedance ZL when ZL = R-jXS
independent
voltage
source
series
impedance
delivers
maximum
average
power
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1
answer
asked
Apr 30, 2018
by
anonymous
A transformer has negative voltage regulation when its load power factor is
A transformer has negative voltage regulation when its load power factor is (1) Zero (2) Unity (3) Leading (4) Lagging
Last answer:
Leading
transformer
negative
voltage
regulation
load
power
factor
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2
answers
asked
Apr 27, 2018
by
anonymous
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is
Last answer:
For a 15-bus power system with 3 voltage controlled buses, the size of Jacobian matrix is 25 x 25
power
system
voltage
controlled
buses
size
jacobian
matrix
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1
answer
asked
Mar 20, 2018
by
anonymous
The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is?
Last answer:
The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is 0.5.
mechanical
power
shunt
motor
maximum
ratio
back
emf
voltage
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146
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1
answer
asked
Mar 19, 2018
by
anonymous
Minimum voltage regulation occurs when the power factor of the load is?
Minimum voltage regulation occurs when the power factor of the load is?
Last answer:
Minimum voltage regulation occurs when the power factor of the load is leading.
minimum
voltage
regulation
power
factor
load
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117
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1
answer
asked
Mar 18, 2018
by
anonymous
In an alternator at lagging power factor the generated voltage per phase as compared to that at unity power factor?
In an alternator at lagging power factor the generated voltage per phase as compared to that at unity power factor?
Last answer:
In an alternator, at lagging power factor the generated voltage per phase as compared to that at unity power factor must be more than terminal voltage.
alternator
lagging
generated
voltage
phase
compared
unity
power
factor
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211
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1
answer
asked
Oct 21, 2017
by
anonymous
If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?
If resistance is 8 Ohm and current is 16 ampere then what will be the voltage and power?
Last answer:
128 volts ,2048 watts
voltage
power
problem
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2
answers
asked
Apr 28, 2018
by
anonymous
Corona loss in transmission lines can be reduced by
Corona loss in transmission lines can be reduced by (A) using small diameter conductors (B) using bundled conductors (C) using less spacing between conductors (D) increasing the transmission line voltage
Last answer:
Corona loss in transmission lines can be reduced by using bundled conductors
corona
loss
transmission
lines
reduced
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95
views
1
answer
asked
Mar 19, 2018
by
anonymous
Iron loss of a transformer can be measured by?
Last answer:
Iron loss of a transformer can be measured by low power factor wattmeter.
iron
loss
transformer
measured
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63
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1
answer
asked
Mar 15, 2018
by
anonymous
Why a dc series motor has a high starting torque?
Why a dc series motor has a high starting torque?
dc
series
motor
high
starting
torque
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0
answers
asked
Mar 15, 2018
by
anonymous
Why high starting torque is required?
Why high starting torque is required?
high
starting
torque
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51
views
0
answers
asked
Mar 15, 2018
by
anonymous
Why does induction motor have high starting current?
Why does induction motor have high starting current?
Last answer:
In induction motor , the flux produce is quadrature to the applied voltage. Since when we are going to start motor , there is no flux present inside . So in order to lets say compensate it ... times of current to further increase flux. So that is reason for high starting current in induction motor
induction
motor
high
starting
current
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115
views
2
answers
asked
Dec 16, 2017
by
anonymous
Why transmission voltages are high?
Why transmission voltages are high?
Last answer:
If current is high then I2R losses will be more .If I2R losses is more then heat generated is more. By heat or increasing temperature resistance will also be increase which will decrease ... voltage we are decreasing current which is advantageous. That's why transmission voltages is high.
transmission
voltages
high
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118
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2
answers
asked
Sep 10, 2017
by
anonymous
why mosfet is used for high frequency?
Last answer:
MOSFET provides better efficiency at high frequency and its high speed switching losses are less hence MOSFET is used for high frequency.
high
frequency
mosfet
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98
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1
answer
asked
Apr 28, 2018
by
anonymous
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based (A) Inter-phase power controller (B) Static Compensator (C) Combination of series and shunt compensators (D) Solid-state series compensator
Last answer:
A Unified Power Flow Controller (FACTS controller) is a voltage source converter based Combination of series and shunt compensators
unified
power
flow
controller
facts
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1
answer
asked
Jun 18, 2018
by
anonymous
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
Last answer:
An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W
ssb
transmitter
peak-to-peak
voltage
antenna
load
peak
envelope
power
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asked
Jun 18, 2018
by
anonymous
Which of the following thyristors can be used for high frequency of operation?
Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO
Last answer:
Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO
thyristors
used
high
frequency
operation
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answer
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