69 views
in Capacitance by
The capacitance of a capacitor is not affected by (a) Plate area (b) Plate separation (c) Nature of dielectric (d) Plate thickness  

Related questions

1 answer 23 views

If a capacitance is charged by a square wave current source, then the voltage across the capacitor will be (a) Square wave (b) Step function (c) Triangular wave (d) Zero

asked May 25, 2018 in Capacitance by Shimroz123
1 answer 15 views

The stability of the power system is not affected by  (1) generator reactance (2) line reactance (3) line losses (4) output torque

asked Apr 30, 2018 in Power system by Shimroz123
1 answer 18 views

 To a highly inductive circuit, a small capacitance is added in series. The angle between voltage and current will _____.

asked May 29, 2018 in Capacitance by Shimroz123
2 answers 196 views

What happens to current flow in a capacitive circuit when the DC voltage across the capacitor is approximately equal to the source voltage?

asked May 29, 2018 in Capacitance by Shimroz123
1 answer 27 views

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.

asked May 8, 2018 in Electrical Engineering by Shimroz123
1 answer 10 views

Under constant load conditions, the speed of a d.c. motor is affected by?

asked Mar 26, 2018 in DC motor by Shimroz123
0 answers 12 views

If the filter capacitance is increased, the ripple will (a) remain same (b) increase (c) decrease (d) be zero

asked May 25, 2018 in Capacitance by Shimroz123
1 answer 21 views

 A coil with large distributed capacitance has _____.

asked May 29, 2018 in Capacitance by Shimroz123
0 answers 13 views

In a parallel plate capacitor of capacitance Co, the electric field is E. If a dielectric slab with dielectric constant = 7 is introduced to fill capacitor completely, the electric field will become (a) 7E (b) E/7 (c) E/3.5 (d) E. Co 

asked May 25, 2018 in Capacitor by Shimroz123
1 answer 15 views

What is the capacitance when a capacitor passes a current of 31.43 mA when supplied with 40 V AC with a frequency of 1000 Hz? A) 0.125 F B) 0.125 μF C) 1257.2 μF D) None of these

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

The capacitor connected in series with the line is used to  A) enhance power factor B) enhance power system capability C) decrease the losses D) decrease the power transfer

asked May 24, 2018 in Capacitance by Shimroz123
1 answer 11 views

Capacitance grading of cable implies A) grading according to capacitance of cables per kilometer length B) cables using single dielectric in different concentrations C) use of dielectrics of different permeabilities D) capacitance required to be introduced at different length to counter the effect of inductance

asked Jun 17, 2018 in Capacitance by Shimroz123
1 answer 16 views

A capacitor of capacitance 50 micro farads is charged to a potential difference of 200 Volts. Find out energy stored in the condenser?

asked May 14, 2018 in Capacitor by Shimroz123
1 answer 106 views

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

asked Apr 29, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 22 views

With the help of which bridge are the capacitance and dielectric loss of a capacitor generally measured ?

asked Apr 23, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

Reduction in the value of capacitance of a capacitor -start motor, results in reduced: (A) noise (B) speed (C) starting torque (D) armature reaction

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 7 views

The capacitance of the capacitor is directly proportional to the

asked May 15, 2018 in Capacitor by Shimroz123
1 answer 10 views

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

asked Apr 29, 2018 in Electrical Engineering by Shimroz123
1 answer 45 views

The reactance offered by a capacitor to an alternating current of frequency 50 Hz is 10 ohm. If frequency is increased to 100 Hz, the reactance will be (a) 2.5 ohm (b) 5.0 ohm (c) 20.0 ohm (d) 40.0 ohm 

asked May 25, 2018 in Capacitor by Shimroz123
1 answer 25 views

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.

asked Mar 24, 2018 in Electrical Engineering by Shimroz123
1 answer 7 views

Tool life is most affected by : (A) cutting speed (B) tool geometry (C) feed and depth (D) microstructure of material being cut

asked Jun 14, 2018 in Mechanical Engineering by Shimroz123
0 answers 28 views

A choke coil having resistance RΩ and of inductance L Henry is shunted by a capacitor of C farads. The dynamic impedance of the resonant circuit would be:  (A) R/LC (B) C/RL (C) L/RC (D) 1/RLC 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
2 answers 51 views

The operation of the relay which is most affected due to arc resistance is A) Mho relay B) Reactance relay C) Impedance relay D) All are equally affected

asked Jun 4, 2018 in Switchgear And Protection by Shimroz123
0 answers 11 views

The lock range of PLL is not governed by  A) Low pass filter B) VCO C) Amplifier D) Phase detector

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 16 views

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

asked Apr 25, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 25 views

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?

asked Mar 20, 2018 in Induction Machine by Shimroz123
1 answer 23 views

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

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 22 views

Capacitance is the ability of a body to store an__________.  (A) electrical charge (B) electric current (C) voltage (D) All of the above

asked May 8, 2018 in Switchgear And Protection by Shimroz123
0 answers 17 views

Timing resistor of a monostable using 555 is 100 kOhm. The timing capacitance (in nF) required for pulsewidth of 100mS is about  A) 100 B) 300 C) 600 D) 900

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
0 answers 57 views

Which of following parameter passing mechanism is supported by C++, but not by C,  (1) call by value (2) call by reference (3) call by value-result (4) All of these

asked Apr 10, 2018 in Computer Engineering by Shimroz123
1 answer 8 views

Which flag does not change by the execution of the instruction DCR B in 8085 microprocessor ?  (a) Parity (b) Carry (c) Zero (d) Sign

asked May 15, 2018 in Microprocessors and Microcontrollers by Shimroz123
1 answer 13 views

A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed.  a. The circuit will become unstable b. The voltage gain will decrease  c. The voltage gain will increase d. The circuit will become stable

asked Aug 31, 2018 by Shimroz123
0 answers 6 views

If the voltage applied across a capacitor is triangular in waveform, the waveform of the current is (a) Triangular (b) Rectangular (c) Sinusoidal (d) Trapezoidal

asked May 25, 2018 in Electrical Engineering by Shimroz123
1 answer 20 views

At an industrial sub-station with a 4 MW load, a capacitor of 2 MVAR is installed to maintain the load power factor at 0.97 lagging. If the capacitor goes out of service, the load power factor becomes (A) 0.85 (B) 1.00 (C) 0.80 lag (D) 0.90 lag

asked May 25, 2018 in Power system by Shimroz123
1 answer 13 views

For a single phase capacitor start induction motor, which of the following statements is valid?  A) The capacitor is used for power factor improvement B) The direction of rotation can be changed by reversing the main winding terminals C) The direction of rotation cannot be changed D) The direction of rotation can be changed by interchanging the supply terminals

asked May 17, 2018 in Induction Machine by Shimroz123
1 answer 66 views

For a parallel plate capacitor which is being charged out of the following the incorrect statement is   (A) Energy stored in the capacitor does not enter it through the connecting wire through the space around the wires and plates of capacitor.   (B) Rate at which energy flows into this volume is equal ... poynting vector points everywhere radially outward of the volume between plates.   (D) The poynting vector points everywhere radially in to the volume between the plates.

asked May 16, 2018 in Capacitor by Shimroz123
1 answer 14 views

The purpose of connecting a capacitor in fluorescent tube circuit is • To increase switching on time • To decrease switching off time • To increase power factor • To decrease power consumption

asked May 14, 2018 in Electrical Engineering by Shimroz123
1 answer 17 views

Plate separation of a parallel plate air capacitor is reduced keeping the voltage constant. The energy stored in the capacitor shall • Increase • Decrease • Remain constant • Remain zero

asked May 13, 2018 in Electrical Engineering by Shimroz123
1 answer 15 views

An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor of the circuit is :  (A) 100/11 (B) 11/100 (C) 110 (D) 1000

asked Apr 30, 2018 in Electrical Engineering by Shimroz123
1 answer 11 views

A 100 pF capacitor has a maximum charging current of 150 μA.What is the slew rate ? (A) 1.5 V/μs (B) 1.05 V/μs (C) 0.15mV/s (D) 10.5 mV/s

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 53 views

Ratings on a capacitor are given 25 µF, 12 V. Also a plus sign is written near one of its terminals. The capacitor is: -  a) Mica capacitor b) Ceramic capacitor c) Electrolytic capacitor d) Paper capacitor

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 21 views

The purpose of a coupling capacitor in an amplifier is to:  (1) Control the output (2) Provide impedance matching (3) Provide DC isolation between amplifier and load (4) W Increase the bandwidth

asked Apr 9, 2018 in Electrical Engineering by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units

8,450 questions

7,047 answers

132 comments

3,085 users

...