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What is ceramic capacitor?
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Sep 18, 2017
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anonymous
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answered
Jan 10, 2018
by
anonymous
Ceramic capacitor is a capacitor made up of ceramic material layers and also the dielectric material in ceramic capacitor is ceramic material.
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asked
Sep 18, 2017
by
anonymous
What are ceramic capacitor made of ?
Last answer:
Ceramic capacitor is made up of ceramic material layers where ceramic material is a dielectric material.
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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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Mar 31, 2018
by
anonymous
Voltage applied across a ceramic dielectric produces an electrostatic...
Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals________.
Last answer:
Voltage applied across a ceramic dielectric produces an electrostatic field 100 times greater than in air. The dielectric constant? of the ceramic equals 100.
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Aug 1, 2020
by
anonymous
A child accidentally drops a square ceramic tile. It breaks into smaller pieces as shown in Figure P. To avoid a scolding, she plans to compose a mural of broken pieces to gift to her mother. Which figure out of the given options could she make?
Last answer:
C
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Jul 4, 2020
by
anonymous
Write four properties of Ceramic Materials and give it’s applications in automobile industry.
Write four properties of Ceramic Materials and give it’s applications in automobile industry.
Last answer:
Properties of Ceramic Material: i. Inorganic & non -metallic material. ii. Brittle material. iii. Insulation to flow of electric current iv. Withstand high temperature. v. Rock like appearance vi. Hardness ... mica etc. 7. In I.C. engines and turbines as armor plates. 8. In cutting tools
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asked
Apr 29, 2018
by
anonymous
What is a capacitor voltage transformer?
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 to step up high voltage signals and provide extra high voltage C) It is a transformer used 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
capacitor
voltage
transformer
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asked
Apr 29, 2018
by
anonymous
What happens to the capacitance if mica is inserted between the plates of an air capacitor?
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
air
capacitor
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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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asked
Apr 29, 2018
by
anonymous
What is the stored energy when 200 V is applied across a 7 μF capacitor?
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
stored
energy
capacitor
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109
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1
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asked
Apr 29, 2018
by
anonymous
What is the capacitance when a capacitor passes a current of 31.43 mA when supplied with 40 V AC with a
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
Last answer:
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
capacitance
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1
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asked
Apr 25, 2018
by
anonymous
A 100 pF capacitor has a maximum charging current of 150 μA.What is the slew rate ?
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
Last answer:
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
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Oct 3, 2017
by
anonymous
what is the difference between capacitor and battery ?
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
capacitor
battery
difference
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2
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asked
Aug 29, 2018
by
normzhie
What is the connection of winding of capacitor start motor
number of windings of a coil in a stator of ac motor for ey slot ac motor
connection
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asked
May 29, 2018
by
anonymous
What happens to current flow in a capacitive circuit when the DC voltage across the capacitor is
What happens to current flow in a capacitive circuit when the DC voltage across the capacitor is approximately equal to the source voltage?
Last answer:
Capacitor always charges up to the voltage of source. When the capacitor is charged to same as source voltage then there is no current flowing through the capacitor. The current through the capacitor is called displacement current.
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asked
Mar 15, 2018
by
anonymous
What is the role of a capacitor in a circuit?
What is the role of a capacitor in a circuit?
role
capacitor
circuit
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Mar 15, 2018
by
anonymous
What is the basic use of capacitor?
What is the basic use of capacitor?
basic
use
capacitor
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Mar 15, 2018
by
anonymous
What is the basic function of a capacitor?
What is the basic function of a capacitor?
basic
function
capacitor
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asked
Mar 15, 2018
by
anonymous
What is the direction of flow when charging a capacitor?
What is the direction of flow when charging a capacitor?
direction
flow
charging
capacitor
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asked
Mar 15, 2018
by
anonymous
What is the symbol of a capacitor?
What is the symbol of a capacitor?
Last answer:
symbol of a capacitor
symbol
capacitor
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asked
Dec 16, 2017
by
anonymous
What is the purpose of a capacitor in an AC circuit?
What is the purpose of a capacitor in an AC circuit?
Last 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
capacitor
ac
circuit
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154
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1
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asked
Mar 15, 2018
by
anonymous
What are the characteristics of a capacitor?
What are the characteristics of a capacitor?
characteristics
capacitor
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asked
Aug 22, 2017
by
anonymous
what does a capacitor do?
what does a capacitor do?
Last answer:
It store energy in.the form of charges It allows AC but restricted DC
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asked
Sep 2, 2019
by
anonymous
Why is a capacitor used in a single phase motor and not in three phase motor ?
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.
capacitor
single
three
phase
motor
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6
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asked
Aug 18, 2019
by
anonymous
Why is a capacitor used in a ceiling fan ?
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
capacitor
ceiling
fan
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203
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3
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asked
Aug 13, 2019
by
anonymous
A 3 micro Faraday capacitor is connected closing a switch to a supply of 100V through 1 milli ohm series resistance. Calculate
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 rise of p.d across the caps 4 Voltage across the capacitor 6 second,after the switch has been closed 5 the time taken for the capacitor to be fully charged.
faraday
capacitor
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Aug 31, 2018
by
anonymous
A certain common-emitter amplifier has a voltage gain of 100. If the emitter bypass capacitor is removed.
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
Last answer:
B
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asked
May 25, 2018
by
anonymous
If the voltage applied across a capacitor is triangular in waveform, the waveform of the current is
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
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asked
May 14, 2018
by
anonymous
The purpose of connecting a capacitor in fluorescent tube circuit is
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
Last answer:
The purpose of connecting a capacitor in fluorescent tube circuit is To increase power factor
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1
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May 13, 2018
by
anonymous
Plate separation of a parallel plate air capacitor is reduced keeping the voltage constant.
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
Last answer:
Plate separation of a parallel plate air capacitor is reduced keeping the voltage constant. The energy stored in the capacitor shall Increase
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1
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May 13, 2018
by
anonymous
When an alternating potential is applied to a capacitor, the current in the circuit will
When an alternating potential is applied to a capacitor, the current in the circuit will 1. lead the applied potential 2. lag the applied potential 3. be in phase with the applied potential 4. none
Last answer:
When an alternating potential is applied to a capacitor, the current in the circuit will lead the applied potential
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asked
May 8, 2018
by
anonymous
For a DC circuit capacitor is
For a DC circuit capacitor is
Last answer:
For a DC circuit capacitor is virtually an open circuit
dc
circuit
capacitor
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1
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asked
Apr 30, 2018
by
anonymous
An inductor of Q factor 10 is connected in series with a capacitor having a Q factor of 100. The overall Q factor
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
Last answer:
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 : 100/11
inductor
q-factor
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1
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asked
Apr 25, 2018
by
anonymous
A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V,
A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum when the supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively (A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz
Last answer:
A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum ... supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively 20, 50 Hz
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1
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Apr 25, 2018
by
anonymous
A synchronous capacitor is
A synchronous capacitor is (A) an unloaded and under excited 3-phase synchronous motor (B) a loaded and over excited 3-phase synchronous generator (C) an unloaded and over excited 3-phase synchronous motor (D) a 3-phase synchronous generator loaded with a capacitor bank
Last answer:
A synchronous capacitor is an unloaded and over excited 3-phase synchronous motor
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36
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1
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asked
Apr 11, 2018
by
anonymous
Cost of low voltage capacitor /kVAr is
Cost of low voltage capacitor /kVAr is (1) More than cost of high voltage capacitor/kVAr (2) Is independent of voltage level (3) Less than cost of high voltage capacitor/kVAr (4) Is function of size of capacitor
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asked
Apr 11, 2018
by
anonymous
Ratings on a capacitor are given 25 µF, 12 V. Also a plus sign is written near one of its terminals. The capacitor...
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
Last answer:
Ratings on a capacitor are given 25 µF, 12 V. Also a plus sign is written near one of its terminals. The capacitor is: - Electrolytic capacitor
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95
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1
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asked
Apr 11, 2018
by
anonymous
A capacitor start, capacitor run single phase induction motor is basically a : -
A capacitor start, capacitor run single phase induction motor is basically a : - a) ac series motor b) dc series motor c) 2 phase induction motor d) 3 phase induction motor
Last answer:
A capacitor start, capacitor run single phase induction motor is basically a : - 2 phase induction motor
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606
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1
answer
asked
Apr 10, 2018
by
anonymous
Synchronous capacitor is
Synchronous capacitor is (a) An ordinary static capacitor bank. (b) An over excited synchronous motor driving mechanical load. (c) An over excited motor running without mechanical load. (d) None of the above
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Apr 9, 2018
by
anonymous
The purpose of a coupling capacitor in an amplifier is to:
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
Last answer:
The purpose of a coupling capacitor in an amplifier is to: Provide DC isolation between amplifier and load.
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115
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1
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asked
Apr 9, 2018
by
anonymous
In a capacitor start single-phase induction motor, the capacitor is connected in: ...
In a capacitor start single-phase induction motor, the capacitor is connected in: (A) series with the main winding (B) series with the auxiliary winding (C) series with both the windings (D) parallel with the auxiliary winding .
Last answer:
In a capacitor start single-phase induction motor, the capacitor is connected in: series with the auxiliary winding
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508
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1
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asked
Apr 9, 2018
by
anonymous
A switch is connected in between a 12V battery and an uncharged capacitor and a 1 K Ohm, resistor...
A switch is connected in between a 12V battery and an uncharged capacitor and a 1 K Ohm resistor. At the time instant when the switch is closed, the voltage across the capacitor is : A) 6V B) 12v C) 0V D) 24V
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80
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Apr 5, 2018
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anonymous
A choke coil having resistance RΩ and of inductance L Henry is shunted by a capacitor of C farads. ...
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
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103
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0
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asked
Mar 31, 2018
by
anonymous
Internal heating of capacitor is usually attributed to________.
Last answer:
Internal heating of capacitor is usually attributed to leakage resistance.
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129
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1
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asked
Mar 31, 2018
by
anonymous
Generally an electrolytic capacitor is made to provide________.
Last answer:
Generally an electrolytic capacitor is made to provide large value of capacitance.
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42
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1
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asked
Mar 25, 2018
by
anonymous
Power factor of an inductive circuit is usually improved by connecting capacitor to it in?
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.
power
factor
inductive
circuit
usually
improved
capacitor
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160
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1
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asked
Mar 25, 2018
by
anonymous
The best place to install a capacitor is?
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.
install
capacitor
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83
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1
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asked
Mar 24, 2018
by
anonymous
The reactance offered by a capacitor to alternating current of frequency 50 Hz is 20 Q....
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.
capacitor
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147
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1
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asked
May 19, 2020
by
anonymous
Calculate the energy stored in the inductor and capacitor, respectively.
power
factor
ac
real
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135
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asked
Aug 25, 2019
by
anonymous
Does current flow through a capacitor ?
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...
current
capacitor
flow
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81
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1
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asked
Jul 30, 2019
by
anonymous
Explain the working of a single phase capacitor start induction motor.
Explain the working of a single phase capacitor start induction motor.
Last answer:
Single phase capacitor start induction motor https://youtu.be/31lvvzU5Puc
single
phase
capacitor
start
induction
motor
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