I need to buy really low voltage electrolytic capacitors.
Last Answer : answer:Allied Electronics http://www.alliedelec.com/ Weird hobby though.
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2 views
1 answer
asked
Feb 28
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, 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
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101 views
1 answer
asked
Apr 29, 2018
by
anonymous

Last Answer : The capacitors used in single-phase capacitor motors have no polarity marking.
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133 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : If the centrifugal switch of a two-value capacitor motor using two capacitors fails to open then Electrolytic capacitor will, in all probability, suffer break down.
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173 views
1 answer
asked
Mar 20, 2018
by
anonymous

Series and parallel capacitor problem
Last Answer : Series and parallel capacitor problem 1 : https://youtu.be/MSl5mRwtjAE Series and parallel capacitor problem 2 : https://youtu.be/yGwbpyEtIyw Series and parallel capacitor problem 3 : https:// ... https://youtu.be/_7KwEwWqiNU Series and parallel capacitor problem 10 : https://youtu.be/et8MCWV_OyE
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109 views
1 answer
asked
May 21, 2019
by
anonymous

What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems ... in power systems to step down extra high voltage signals and provide low voltage D) None of these
Last Answer : What is a capacitor voltage transformer? A) It is a transformer used in power systems to step up low voltage signals and provide extra high voltage B) It is a transformer used in power systems ... power systems to step down extra high voltage signals and provide low voltage D) None of these
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100 views
1 answer
asked
Apr 29, 2018
by
anonymous
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Last Answer : If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is 10°.
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224 views
1 answer
asked
Mar 21, 2018
by
anonymous

Why is a capacitor used in a single phase motor and not in three phase motor ?
Last Answer : In 1-phase induction motor capacitor work is generate the auxiliary winding current than excite the main winding to rotor starts rotate. After rotor start rotating about 75% of their speed than auxiliary ... emf to start the motor.so,in 3-phase induction motor is self start induction motor.
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267 views
6 answers
asked
Sep 2, 2019
by
anonymous

Does current flow through a capacitor ?
Last Answer : Imagine a pipe with a flexible diaphram in the middle separating two haves of the pipe. Now the pipe is filled with air. If you apply a pressure to one end the diaphram will deform ... capacitor, the effects on electrons will be recreated across the boundary. But theres no electrical connection...
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104 views
1 answer
asked
Aug 25, 2019
by
anonymous

Why is a capacitor used in a ceiling fan ?
Last Answer : For splitting phase so that a rotating magnetic field will be produced & as per Lenz's law a torque will be created & rotor starts rotating. In single phase if capacitor is not used for split phase then a pulsating mag. field is produced which is unable to produce torque on rotor
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228 views
3 answers
asked
Aug 18, 2019
by
anonymous

A 3 micro Faraday capacitor is connected closing a switch to a supply of 100 V through 1 milli ohm series resistance. Calculate 1 the time constant 2 initial charging current 3 the initial rate of ... second,after the switch has been closed 5 the time taken for the capacitor to be fully charged.
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99 views
0 answers
asked
Aug 13, 2019
by
anonymous

Explain the working of a single phase capacitor start induction motor.
Last Answer : Single phase capacitor start induction motor https://youtu.be/31lvvzU5Puc
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414 views
2 answers
asked
Jul 30, 2019
by
anonymous

Energy stored in capacitor examples
Last Answer : Energy stored in capacitor examples
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121 views
1 answer
asked
May 22, 2019
by
anonymous

Problem on capacitor
Last Answer : Problem on capacitor 1 : https://youtu.be/ZyT3WOFN8fs Problem on capacitor 2 : https://youtu.be/JBwEfekvutE Problem on capacitor 3 : https://youtu.be/E1lhIn5t8Mo Problem on capacitor 4 : https://youtu.be/yl651f4IUfg
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117 views
1 answer
asked
May 21, 2019
by
anonymous
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For a DC circuit capacitor is
Last Answer : For a DC circuit capacitor is virtually an open circuit
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94 views
1 answer
asked
May 8, 2018
by
anonymous

What happens to the capacitance if mica is inserted between the plates of an air capacitor? A) The capacitance increases B) The capacitance decreases C) The capacitance remains the same D) The capacitance becomes zero
Last Answer : What happens to the capacitance if mica is inserted between the plates of an air capacitor? A) The capacitance increases B) The capacitance decreases C) The capacitance remains the same D) The capacitance becomes zero
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122 views
1 answer
asked
Apr 29, 2018
by
anonymous

What is the stored energy when 200 V is applied across a 7 μF capacitor? A) 1400 Joules B) 0.7 Joules C) 0.14 Joules D) None of these
Last Answer : What is the stored energy when 200 V is applied across a 7 μF capacitor? A) 1400 Joules B) 0.7 Joules C) 0.14 Joules D) None of these
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144 views
1 answer
asked
Apr 29, 2018
by
anonymous

Power factor of an inductive circuit is usually improved by connecting capacitor to it in?
Last Answer : Power factor of an inductive circuit is usually improved by connecting capacitor to it in parallel.
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280 views
1 answer
asked
Mar 25, 2018
by
anonymous

The best place to install a capacitor is?
Last Answer : The best place to install a capacitor is across the terminals of the inductive load.
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117 views
1 answer
asked
Mar 25, 2018
by
anonymous

The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes_____ohms.
Last Answer : The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q. If frequency is increased to 100 Hz, reactance becomes 10 ohms.
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341 views
1 answer
asked
Mar 24, 2018
by
anonymous

what is the difference between capacitor and battery ?
Last Answer : A capacitor stores power but in very small quantitys and work in D/C and A/C circuits and it needs a power source from wich it gets the power it stores and a battery also stores power but in much larger quantitys measured in Amp/Hours
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115 views
2 answers
asked
Oct 3, 2017
by
anonymous
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Last Answer : Capacitor use in fan is made up of dielectic material which is in semi solid material having high capacity.but generation of heat in capacitor the semi solid material converted into dry solid because of ... capacity becomes lower and lower so for good result of our fan we have to change it.
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129 views
1 answer
asked
Sep 19, 2017
by
anonymous

Obtain the Ripple factor of a full wave rectifier with shunt capacitor filter.
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10 views
0 answers

Describe the operation of shunt capacitor filter with the help of circuit diagram and waveforms.
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46 views
0 answers

Describe the operation of shunt capacitor filter with the help of circuit diagram and waveforms.
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6 views
0 answers

State the applications and specification of (i) Resistor (ii) Capacitor (iii)Inductor
Last Answer : Application of resistor: 1.Resistors are used in high frequency instrument. 2.Resistor is used in power control circuit. 3.It is used in DC power supplies. 4.Resistors are used ... DC Current 3.Electromagnetic Interference (EMI) 4.Magnetic Saturation Flux Density 5.Curie Temperature
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268 views
1 answer
asked
May 2, 2020
by
anonymous

Charging Action of capacitor
Last Answer : Charging Action of capacitor .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%; }
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99 views
2 answers
asked
Apr 20, 2020
by
anonymous

Capacitor : Before charging takes place
Last Answer : Capacitor : Before charging takes place
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79 views
1 answer
asked
Apr 20, 2020
by
anonymous

Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these
Last Answer : Which of the following can be used to measure the capacitance of a capacitor? A) Rheostat B) Schering bridge C) Wheatstone bridge D) None of these
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2.8k views
1 answer
asked
Apr 29, 2018
by
anonymous
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Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge
Last Answer : Dielectric loss in a capacitor is best measured by Schering Bridge
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139 views
1 answer
asked
Apr 25, 2018
by
anonymous

A capacitor is generally a?
Last Answer : A capacitor is generally a linear and bilateral component.
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59 views
1 answer
asked
Mar 25, 2018
by
anonymous

Last Answer : Commonly used standard capacitor is concentric cylindrical type.
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93 views
1 answer
asked
Mar 21, 2018
by
anonymous

When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is ?
Last Answer : When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is all right.
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222 views
1 answer
asked
Mar 21, 2018
by
anonymous

Last Answer : To reverse the direction of rotation of a capacitor start motor while it is running we should disconnect motor from the supply till it stops then reconnect it to supply with reversed connection of main or auxiliary winding.
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132 views
1 answer
asked
Mar 20, 2018
by
anonymous
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Last Answer : Two-value capacitor motor finds increased application as compressor motor in small home air-conditioners because it has low starting as well as running currents at relatively high power factor.
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75 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.
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101 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.
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163 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a capacitor start single-phase motor, when capacitor is replaced by a resistance motor will continue to run in same direction.
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224 views
1 answer
asked
Mar 20, 2018
by
anonymous

A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will?
Last Answer : A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will not start at all.
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235 views
1 answer
asked
Mar 20, 2018
by
anonymous
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Last Answer : The value of starting capacitor of a fractional horse power motor will be 300 uF .
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99 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.
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212 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a capacitor start and run motors the function of the running capacitor in series with the auxiliary winding is to improve power factor.
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715 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In capacitor start single-phase motors current in the starting winding leads the voltage.
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102 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : If the capacitor of a single-phase motor is short-circuited the motor will not start.
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105 views
1 answer
asked
Mar 20, 2018
by
anonymous

Can we use the synchronous motor as the synchronous capacitor?
Last Answer : Yes, we can use the synchronous motor as the synchronous capacitor when the synchrnous motor is overexcited.
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91 views
1 answer
asked
Mar 18, 2018
by
anonymous

What are the characteristics of a capacitor?
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84 views
0 answers
asked
Mar 15, 2018
by
anonymous
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Which capacitor is used for high frequency?
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79 views
0 answers
asked
Mar 15, 2018
by
anonymous

What is the role of a capacitor in a circuit?
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78 views
0 answers
asked
Mar 15, 2018
by
anonymous

Why shunt capacitor is used?
Last Answer : To improve voltage at receiving end and power factor
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96 views
1 answer
asked
Mar 15, 2018
by
anonymous

Why capacitor bank is used?
Last Answer : In industrial or factory used E.B Power supply must be maintained above 0.90 power factor is compulsory for avoid EB Penalty. So APFC ( automatic Power factor control ) panel is used to maintained balance the load and PF maintained.
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169 views
3 answers
asked
Mar 15, 2018
by
anonymous
