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Static capacitors are rated in terms of?
asked
Mar 20, 2018
by
anonymous
static
capacitors
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asked
Mar 25, 2018
by
anonymous
Capacitors for power factor correction are rated in?
Capacitors for power factor correction are rated in?
Last answer:
Capacitors for power factor correction are rated in kVAR.
capacitors
power
factor
correction
rated
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57
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1
answer
1
asked
Mar 20, 2018
by
anonymous
In a distribution system, in order to improve power factor, the synchronous capacitors are installed?
Last answer:
In a distribution system, in order to improve power factor, the synchronous capacitors are installed at the receiving end.
distribution
system
improve
power
factor
synchronous
capacitors
installed
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104
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1
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2
asked
Mar 21, 2018
by
anonymous
The desirable static characteristics of a measuring system are?
Last answer:
The desirable static characteristics of a measuring system are accuracy, sensitivity and reproducibility.
desirable
static
characteristics
measuring
system
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286
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1
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3
asked
Mar 20, 2018
by
anonymous
Series capacitors on transmission lines are of little use when the load VAR requirement is?
Last answer:
Series capacitors on transmission lines are of little use when the load VAR requirement is small.
series
capacitors
transmission
lines
use
load
var
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145
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1
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4
asked
Mar 15, 2018
by
anonymous
What are the different types of capacitors?
What are the different types of capacitors?
different
types
capacitors
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5
asked
Aug 18, 2019
by
anonymous
Why capacitors are used to improve power factor?
Why capacitors are used to improve power factor?
Last answer:
Capacitors generate reactive power instead of that drawn from source which is required by inductive loads.so it reduce the reactive current which is drawn from source to be drawn from capacitor.This control in Electric bills cost.
capacitors
improve
power
factor
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111
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3
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6
asked
Mar 20, 2018
by
anonymous
Series capacitors are used to?
Last answer:
Series capacitors are used to compensate for line inductive reactance.
series
capacitors
used
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1
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7
asked
Mar 8, 2018
by
anonymous
Which capacitors are suitable for DC filter circuits?
Which capacitors are suitable for DC filter circuits?
Last answer:
Electrolytic capacitors are suitable for DC filter circuits.
capacitors
dc
filter
circuits
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56
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1
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8
asked
Mar 20, 2018
by
anonymous
The capacitors used in single-phase capacitor motors have no?
Last answer:
The capacitors used in single-phase capacitor motors have no polarity marking.
capacitors
used
single-phase
capacitor
motors
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105
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1
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9
asked
May 21, 2020
by
anonymous
Explain working of static AC circuit breaker.
Explain working of static AC circuit breaker.
Last answer:
Static AC Circuit breaker: The circuit configuration of static AC circuit breaker using SCR is shown in the figure. When switch S' is closed, the SCRs T1 and T2 are fired in positive ... non-availability of gate current. Thus the maximum time delay for breaking the circuit is one half-cycle.
working
static
ac
circuit
breaker
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93
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1
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10
asked
Jun 29, 2019
by
anonymous
Briefly describe the electric field of a static charge.
Briefly describe the electric field of a static charge.
briefly
describe
the
electric
field
of
a
static
charge
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11
asked
Apr 28, 2018
by
anonymous
Which of the following statements is not characteristic of a static magnetic field?
Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.
Last answer:
Which of the following statements is not characteristic of a static magnetic field? (A) It is solenoidal. (B) It is conservative. (C) It has no sinks or sources. (D) Flux lines are always closed.
characteristic
static
magnetic
field
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12
asked
Sep 4, 2018
by
anonymous
State any four types of capacitors.
State any four types of capacitors.
Last answer:
Types of capacitors: i) Air capacitor ii) Paper capacitor iii) Mica capacitor iv) Ceramic capacitor v) Electrolytic capacitor vi) Poly-carbon capacitor
types
capacitors
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74
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1
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13
asked
Apr 27, 2020
by
anonymous
Explain dynamic and static induced emf with neat diagram.
Explain dynamic and static induced emf with neat diagram.
Last answer:
Dynamically Induced EMF:- In this case, either coil moves or magnet moves, so that there is relative motion between coil & magnetic field. Thus magnetic field is cut by coil & emf is induced in it. The emf ... The expression for induced EMF is e= -L(di/dt) or = -N(dϕ/dt).
explain
dynamic
and
static
induced
emf
with
neat
diagram
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91
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1
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14
asked
Jun 29, 2019
by
anonymous
List at least two examples that show how static electricity can be generated.
List at least two examples that show how static electricity can be generated.
Last answer:
Examples of how static electricity can be generated include combing your hair, walking across a carpeted room, or sliding two pieces of plastic across each other.
list
at
least
two
examples
that
show
how
static
electricity
can
be
generated
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85
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1
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15
asked
May 6, 2018
by
anonymous
Which RAM is faster static or dynamic?
Which RAM is faster static or dynamic?
Last answer:
Static RAM are faster than dynamic RAM.
ram
faster
static
dynamic
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50
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1
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16
asked
Mar 22, 2018
by
anonymous
Dynamic friction as compared to static friction is?
Dynamic friction as compared to static friction is?
Last answer:
Dynamic friction is less compared to static friction.
dynamic
friction
static
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78
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2
answers
17
asked
Aug 9, 2017
by
anonymous
Static Synchronous Compensator (STATCOM)
Static Synchronous Compensator (STATCOM)
Last answer:
Static Synchronous Compensator (STATCOM) STATCOM stands for Static Synchronous Compensator or Condenser. It may be a source of reactive power or sink of reactive AC power. It can ... and Controllers etc. STATCOM have symmetric lead-lag capability. STATCOM have no moving part.
static
synchronous
compensator
statcom
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161
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1
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18
asked
Apr 19, 2020
by
anonymous
Capacitors
Capacitors
Last answer:
.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
capacitors
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160
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2
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19
asked
Apr 29, 2018
by
anonymous
What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF,
What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these
Last answer:
What is the charge on each capacitor when a 150 V is applied across two capacitors with values 5 μF and 10 μF, connected in series? A) 500 μC B) 0.5 μC C) 0.5 C D) None of these
charge
capacitor
capacitors
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64
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1
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20
asked
Mar 25, 2018
by
anonymous
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as?
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as
Last answer:
The circuit has resistors, capacitors and semi-conductor diodes. The circuit will be known as non-linear circuit.
circuit
resistors
capacitors
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141
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1
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21
asked
Mar 21, 2018
by
anonymous
For measurements on high voltage capacitors, the suitable bridge is?
Last answer:
For measurements on high voltage capacitors, the suitable bridge is Schering bridge.
measurements
high
voltage
capacitors
bridge
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227
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1
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22
asked
Apr 11, 2018
by
anonymous
In case of a power transformer, the no load current in terms of rated current is
In case of a power transformer, the no load current in terms of rated current is (1) 10-20% (2) 15-30% (3) 2-6% (4) 30-50%
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110
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0
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23
asked
Jul 24, 2019
by
anonymous
Explain the concept of following terms : (i) Connected load (ii) Maximum demand
Last answer:
1. Connected Load: It is the sum of load of all equipment's connected to supply system which are in use or not in use of each consumer. OR The sum of connected load of all consumers ... is the maximum load which a consumer uses at a particular time period out of his total connected load.
connected
load
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61
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1
answer
24
asked
Mar 20, 2018
by
anonymous
Power plant having maximum demand more than the installed rated capacity will have utilisation factor?
Last answer:
Power plant having maximum demand more than the installed rated capacity will have utilisation factor more than unity.
power
plant
maximum
demand
installed
rated
capacity
utilisation
factor
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68
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1
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25
asked
May 25, 2018
by
anonymous
Which of the following capacitors are used in D.C. circuits ?
Which of the following capacitors are used in D.C. circuits ? (a) Mica (b) Air (c) Ceramic (d) Electrolytic
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63
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0
answers
26
asked
May 15, 2018
by
anonymous
A battery of 40 V and three capacitors of 1000 μF, 500 μF and 100 μF are all connected in
A battery of 40 V and three capacitors of 1000 μF, 500 μF and 100 μF are all connected in (I) parallel and (II) series. The ratio of total charge stored in case I to that in case II is approximately (a) 3 : 64 (b) 64 : 3 (c) 160 : 3 (d) 104 : 5
Last answer:
A battery of 40 V and three capacitors of 1000 μF, 500 μF and 100 μF are all connected in (I) parallel and (II) series. The ratio of total charge stored in case I to that in case II is approximately 104 : 5
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71
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1
answer
27
asked
Sep 2, 2018
by
anonymous
Three capacitors 15µf, 18µf and 12µf are connected in a circuit. Find equivalent capacitance when they are connected in – 1) Series 2) Parallel
Three capacitors 15µf, 18µf and 12µf are connected in a circuit. Find equivalent capacitance when they are connected in – 1) Series 2) Parallel
Last answer:
Ans: Value of equivalent capacitance: Given: C1= 15μF, C2=18 µF, C3= 12µF i)For Series combination of capacitors: 1/Cs = (1/C1)+( 1/C2) +(1/C3) = (1/15)+( 1/18)+( 1/12) 1/Cs = 0.0666+0.0555+0. ... Cs = 4.868 µF ii) For parallel combination of capacitors: Cp = C1 + C2 + C3 = 15 +18+ 12 = 45 µF
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28
asked
May 29, 2018
by
anonymous
How will the total capacitance change, when two capacitors are connected in parallel?
How will the total capacitance change, when two capacitors are connected in parallel?
Last answer:
The capacitance will increase if connected in parallel because it will be like you have increase surface area of a plate by connecting it to another.
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92
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2
answers
29
asked
Sep 18, 2017
by
anonymous
What will happen when capacitors are connected in parallel?
Last answer:
The capacity of capacitor is added and it becomes multiple of no of capacitors capacity
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58
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1
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30
asked
Aug 17, 2020
by
omar
A synchronous generator and motor are rated 30MVA, 13.2 kV, and both have subtransient reactances of 20%. The line connecting them has a reactance of 10% on the base of the machine ratings. The motor is drawing 20MW at 0.8 power-factor leading and a terminal voltage of 12.8 kV when a symmetrical 3-phase fault occurs at the motor terminals. Use superposition concepts to find the fault current in amperes
power system analysis
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401
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0
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31
asked
Apr 10, 2018
by
anonymous
In a static over-current relay, inverse time characteristics are obtained by
In a static over-current relay, inverse time characteristics are obtained by (a) A differentiating circuit (b) An integrating circuit (c) A transistor amplifier (d) A transistor switch
Last answer:
B
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759
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1
answer
32
asked
Mar 31, 2018
by
anonymous
In motor circuit static frequency changers are used for __________.
Last answer:
In motor circuit static frequency changers are used for speed regulation.
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65
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1
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33
asked
Aug 1, 2020
by
anonymous
In terms of calories, 20 jamuns and 3 bananas combined are equivalent to one mango and one papaya combined, and 2 mangoes and 5 bananas combined are equivalent to 4 papayas and 80 jamuns combined. Then 8 papayas and 2 mangoes are equivalent to how many bananas?
In terms of calories, 20 jamuns and 3 bananas combined are equivalent to one mango and one papaya combined, and 2 mangoes and 5 bananas combined are equivalent to 4 papayas and 80 jamuns combined. Then 8 papayas and 2 mangoes are equivalent to how many bananas?
Last answer:
17
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171
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1
answer
34
asked
Mar 19, 2018
by
anonymous
The transformer ratings are usually expressed in terms of?
Last answer:
The transformer ratings are usually expressed in terms of kVA.
transformer
rating
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209
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1
answer
35
asked
Sep 18, 2017
by
anonymous
What are the uses of ceramic capacitors?
Last answer:
Uses of ceramic capacitors is as follows :The ceramic capacitor is use in DC to DC converter.The ceramic capacitor is use with band pass and band stop filter.Ceramic capacitor ... The ceramic capacitor is uses in high frequency circuits.Ceramic capacitors are use for biasing applications.
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98
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1
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36
asked
Dec 17, 2020
by
anonymous
3 lamps rated 240V 60W,240V 75W,240V 100W respectively are connected in series across a 240V supply. Calculate the voltage across each lamp and power output from each lamp.
Analogue Electronics 2
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17
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0
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37
asked
Aug 19, 2019
by
anonymous
Why are generators rated in kVA not in kW ?
Why are generators rated in kVA not in kW ?
Last answer:
Because It's rating of generator kva is apparent power. Kw is active power which we use. And one is kvar reactive power.
generators
kva
kw
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94
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3
answers
38
asked
Mar 31, 2018
by
anonymous
Two heaters, rated at 1000 W, 250 V each are connected in series across...
Two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total power drawn from the supply would be __________ watt.
Last answer:
Two heaters, rated at 1000 W, 250 V each are connected in series across a 250 V, 50 Hz ac mains. The total power drawn from the supply would be 500 watt.
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82
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1
answer
39
asked
Mar 29, 2018
by
anonymous
The storage batteries are rated in
Last answer:
The storage batteries are rated in Amp-hrs
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37
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1
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40
asked
Mar 28, 2018
by
anonymous
Rheostats are usually rated in
Last answer:
Rheostats are usually rated in Watts and Amperes.
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95
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1
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41
asked
Jun 17, 2018
by
anonymous
Which of the following are the basic elements in a 555 timer IC?
Which of the following are the basic elements in a 555 timer IC? (a) Two comparators (b) A flip-flop (c) A discharge transistor (d) A resistive voltage divider A) (a), (b) and (d) B) only (a), (b) and (c) C) only (b), (c) and (d) D) only (a), (b), (c) and (d)
Last answer:
Which of the following are the basic elements in a 555 timer IC? (a) Two comparators (b) A flip-flop (c) A discharge transistor (d) A resistive voltage divider A) (a), (b) and (d) B) only (a), (b) and (c) C) only (b), (c) and (d) D) only (a), (b), (c) and (d)
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114
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1
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42
asked
Mar 20, 2018
by
anonymous
Depreciation charges are high in case of?
Last answer:
Depreciation charges are high in case of thermal plant.
depreciation
charges
high
case
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90
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1
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43
asked
May 13, 2018
by
anonymous
The terms 'soft sectored' and 'hard sectored' are used in connection with
The terms 'soft sectored' and 'hard sectored' are used in connection with 1. μP 2. RAM 3. ROM 4. Floppy disk
Last answer:
The terms 'soft sectored' and 'hard sectored' are used in connection with Floppy disk
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40
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1
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44
asked
Mar 27, 2018
by
anonymous
Static error co-efficients are used as a measure of the effectiveness of...
Static error co-efficients are used as a measure of the effectiveness of closed loop systems for specified ________ input signal.
Last answer:
acceleration , velocity, position
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82
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45
asked
Jul 24, 2019
by
anonymous
Why concentrating collectors are used in solar power plant.
Last answer:
Because of following advantages concentrating type collector are used in solar power plant: - 1. Temperature: Temperature obtained is high because absorber area is less and collector/reflector area ... results: As tracking system is used better results are obtain than flat type collector.
solar
power
plant
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65
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1
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46
asked
Mar 20, 2018
by
anonymous
In Hopknison demand rate or two part tariff the demand rate or fixed charges are?
Last answer:
In Hopknison demand rate or two part tariff the demand rate or fixed charges are dependent upon the maximum demand of the consumer.
hopknison
demand
rate
part
tariff
fixed
charges
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58
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1
answer
47
asked
May 24, 2018
by
anonymous
Two generating stations G1 and G2 of ratings 10 MVA and 8 MVA respectively are linked by a line rated at 5
Two generating stations G1 and G2 of ratings 10 MVA and 8 MVA respectively are linked by a line rated at 5 MVA, 0.1 Pu reactance. Each station has a reactance of 0.5 pu. If the base MVA is 10 MVA, short-circuit MVA of G1 is
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353
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0
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48
asked
May 16, 2018
by
anonymous
Modern capacitors which have high capacitance in small size use a dielectric of
Modern capacitors which have high capacitance in small size use a dielectric of (A) paper (B) rubber (C) ceramic (D) Mylar
Last answer:
Modern capacitors which have high capacitance in small size use a dielectric of ceramic
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75
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1
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49
asked
May 15, 2018
by
anonymous
Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is
Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is
Last answer:
Equivalent capacitance ‘C’ of a system of capacitors C1,C2,C3 connected in parallel is C = C1+C2+C3
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58
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50
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