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Which energy is stored in capacitor?

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Description : Energy stored in capacitor examples

Answer : Energy stored in capacitor examples

Description : 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

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

Description : Energy stored in electrostatic field of capacitance formula

Answer : Energy stored in electrostatic field of capacitance formula

Description : Derive an expression for energy stored in a magnetic field . 

Answer : Expression for energy stored in a magnetic field: The energy is stored in magnetic field when current increases and return back when the current decreases. At instant t' seconds after closer of switch ... energy absorbed by the magnetic field when current increases from 0 to I amperes 

Description : Write how energy can be stored or generated in each of following : i) solar cell ii) geothermal energy iii) hydrogen energy in biomass.

Answer : i) Solar cell : Energy can be stored:  1. Storage Battery is used to store electricity.  OR   Energy can be generated  1. Directly Conversion:   a) By use of P.V Cell ( ... fuels in engines:-  3. The biomass is subjected to fermentation process to obtain a gaseous fuel called biomass

Description : 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

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

Description : Which capacitor is used for high frequency?

Description : Which side of a capacitor is negative?

Answer : In electrolytic type negative is shorter lead and usually mark in the tank. But of course not applicable to non-polar.

Description : Why is a capacitor used in a single phase motor and not in three phase motor ?

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.

Description : Why is a capacitor used in a ceiling fan ?

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

Description : Dielectric loss in a capacitor is best measured by (A) Wien Bridge (B) Schering Bridge (C) Anderson Bridge (D) Heaviside-Campbell Equal Ratio Bridge

Answer : Dielectric loss in a capacitor is best measured by Schering Bridge

Description : Power factor of an inductive circuit is usually improved by connecting capacitor to it in?

Answer : Power factor of an inductive circuit is usually improved by connecting capacitor to it in parallel.

Answer : If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is 10°.

Answer : The capacitors used in single-phase capacitor motors have no polarity marking.

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.

Answer : In a ceiling fan employing capacitor run motor secondary winding surrounds the primary winding.

Answer : In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.

Answer : In a capacitor start single-phase motor, when capacitor is replaced by a resistance motor will continue to run in same direction.

Answer : In a capacitor start motor, the phase displacement between starting and running winding can be nearly 90°.

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.

Answer : In capacitor start single-phase motors current in the starting winding leads the voltage.

Description : What is the role of a capacitor in a circuit?

Description : How do you discharge a capacitor in a microwave?

Description : What is the purpose of a capacitor in an AC circuit?

Answer : Every AC supply is not ideal AC it contains DC component so to provide restriction to DC component in supply we have to use Capacitor

Description : State the applications and specification of (i) Resistor (ii) Capacitor (iii)Inductor

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 

Description : Charging Action of capacitor

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%; }

Description : Capacitor : Before charging takes place

Answer : Capacitor : Before charging takes place

Description : Does current flow through a capacitor ?

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...

Description : 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.

Description : Explain the working of a single phase capacitor start induction motor. 

Answer : Single phase capacitor start induction motor https://youtu.be/31lvvzU5Puc

Description : Series and parallel capacitor problem

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

Description : Problem on capacitor

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

Description : For a DC circuit capacitor is

Answer : For a DC circuit capacitor is virtually an open circuit

Description : 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

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

Description : 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

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

Description : 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

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

Description : A capacitor is generally a?

Answer : A capacitor is generally a linear and bilateral component.

Description : The best place to install a capacitor is?

Answer : The best place to install a capacitor is across the terminals of the inductive load.

Description : 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.

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.

Answer : Commonly used standard capacitor is concentric cylindrical type.

Description : 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 ?

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.

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.

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.

Description : 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?

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.

Answer : The value of starting capacitor of a fractional horse power motor will be 300 uF .

Answer : If the capacitor of a single-phase motor is short-circuited the motor will not start.

Description : Can we use the synchronous motor as the synchronous capacitor?

Answer : Yes, we can use the synchronous motor as the synchronous capacitor when the synchrnous motor is overexcited.

Description : What are the characteristics of a capacitor?

Description : Why shunt capacitor is used?

Answer : To improve voltage at receiving end and power factor

Description : Why capacitor bank is used?

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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