Capacitance is the ability of a body to store an__________. (A) electrical charge (B) electric current (C) voltage (D) All of the above
Last Answer : Capacitance is the ability of a body to store an electrical charge
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1 answer
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May 8, 2018
by
anonymous

Shunt capacitance is neglected while considering (a) short transmission line (b) medium transmission line (c) long transmission line (d) medium and long transmission lines
Last Answer : (a) short transmission line
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38 views
1 answer

D.C. shunt relays are made of?
Last Answer : D.C. shunt relays are made of many turns of thin wire.
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2.7k views
1 answer
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Mar 19, 2018
by
anonymous

Calculate the value of equivalent capacitance of the combination.
Last Answer : Calculate the value of equivalent capacitance of the combination
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133 views
1 answer
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Apr 16, 2020
by
anonymous

effect of inductance and capacitance on performance of transmission line.
Last Answer : Following are the effect on performance of transmission line: 1. Due to inductance (L) voltage drop in transmission line produces. 2. Capacitor (C) draws charging current ... , transmission line efficiency, voltage regulation & also power factor of transmission line gets affected.
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136 views
1 answer
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Aug 25, 2019
by
anonymous

Explain estimation of channel capacitance of CMOS.
Last Answer : Capacitance estimation: The dynamic response i.e. switching speed of MOS system depends on capacitance associated with the MOS devices which are formed by different layers in MOS transistors ... are due to three dimensional, distributed charge voltage relations within the device structure.
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75 views
1 answer
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Jul 21, 2019
by
anonymous

What is capacitance?
Last Answer : Capacitance is the capacity of element to store electric charge in it. The unit of capacitance is Farad.
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80 views
1 answer
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Jul 4, 2019
by
anonymous

Energy stored in electrostatic field of capacitance formula
Last Answer : Energy stored in electrostatic field of capacitance formula
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1 answer
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Jun 11, 2019
by
anonymous

Capacitance
Last Answer : Capacitance formula
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1 answer
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Jun 11, 2019
by
anonymous

A diode in which the change in reverse bias voltage varies the capacitance is called as A) Varactor diode B) Switching diode C) Tunnel diode D) Zener-diode
Last Answer : A diode in which the change in reverse bias voltage varies the capacitance is called as Varactor diode
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151 views
1 answer
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Jun 18, 2018
by
anonymous

For 11 kV line the capacitance per km per phase will be of the order of: (A) 1 Farad (B) 0.1 Farad (C) 0.01 Farad (D) 0.01 microF
Last Answer : For 11 kV line the capacitance per km per phase will be of the order of: 0.01 Farad
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439 views
1 answer
asked
May 8, 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 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
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118 views
1 answer
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Apr 29, 2018
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
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Apr 29, 2018
by
anonymous

A suspension type insulator has 2 units with self capacitance C and ground capacitance of 0.2 C. Each unit can withstand for a maximum voltage of 11 kV. Its string efficiency is (A) 78% (B) 82% (C) 80% (D) 84%
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0 answers
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Apr 28, 2018
by
anonymous

The time constant of the capacitance circuit is defined as the time during which voltage?
Last Answer : The time constant of the capacitance circuit is defined as the time during which voltage rises to 63.2% of its final steady value.
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1 answer
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Mar 25, 2018
by
anonymous

What is the reciprocal of capacitance?
Last Answer : The reciprocal of capacitance is called elastance, and its unit is the reciprocal farad, also called the daraf.
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2.9k views
3 answers
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Jan 7, 2018
by
anonymous

Last Answer : Yes BJT have internal capacitances.
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89 views
1 answer
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Sep 27, 2017
by
anonymous

A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be
Last Answer : A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be 474 V
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1 answer
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May 8, 2018
by
anonymous

Last Answer : If the field of a D.C. shunt motor gets opened while motor is running the motor will attain dangerously high speed.
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135 views
1 answer
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Mar 20, 2018
by
anonymous

A 4-pole, dc shunt motor working on 250V takes a current of 2A when running at no load on 1000 rpm. Calculate its back emf and speed at load if the motor takes 51A. Armature and shunt field resistance are 0.2Ω and 250Ω respectively
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Describe the operation of shunt capacitor filter with the help of circuit diagram and waveforms.
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Describe the operation of shunt capacitor filter with the help of circuit diagram and waveforms.
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DC shunt motor
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%; }
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140 views
2 answers
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Apr 23, 2020
by
anonymous

If field current is decreased in shunt dc motor, the speed of the motor (a) remains same. (b) increases. (c) decreases. (d) none of the above.
Last Answer : increases
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2.8k views
4 answers
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Aug 25, 2019
by
anonymous
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State any four applications of DC shunt motor.
Last Answer : Applications of DC shunt motor: 1) Lathe machines 2) drilling machines 3) milling machines 4) Printing machinery 5) Paper industry 6) centrifugal and reciprocating pumps 7) blowers 8)fans
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115 views
2 answers
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Jul 27, 2019
by
anonymous

66 views
0 answers
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Jul 23, 2019
by
anonymous

Why does the speed of a DC shunt motor decrease as the load increases?
Last Answer : Because if the load is increasing then the torque must also be increase. If not then the speed of motor will decrease.
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2.7k views
1 answer
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Jul 5, 2019
by
anonymous

State the use of shunt and series resistance used in extension of meter.
Last Answer : Use of shunt and series resistance: i) Use of shunt: To extend the range of Ammeter. ii) Use of series resistance: To extend the range of Voltmeter.
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88 views
1 answer
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Sep 6, 2018
by
anonymous

In which of the following transmission lines, the value of the Shunt admittance should be approximated to zero ? (A) A 66 kV 35 km long line (B) A 132 kV 200 km long line (C) A 220 kV 300 km long line (D) A 400 kV 500 km long line
Last Answer : In which of the following transmission lines, the value of the Shunt admittance should be approximated to zero ? (A) A 66 kV 35 km long line (B) A 132 kV 200 km long line (C) A 220 kV 300 km long line (D) A 400 kV 500 km long line
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523 views
1 answer
asked
May 8, 2018
by
anonymous

Shunt compensation in an EHV line is used to (A) Improve stability. (B) Improve the voltage profile. (C) Reduce the fault level. (D) Substitute for synchronous phase modifier.
Last Answer : Shunt compensation in an EHV line is used to Improve the voltage profile.
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5.3k views
1 answer
asked
May 8, 2018
by
anonymous

A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is
Last Answer : A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm
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1 answer
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May 3, 2018
by
anonymous

A shunt fault is characterized by (A) Increase in current, frequency and pf (B) Increase in current, reduction in frequency and pf (C) Increase in current and frequency, reduction in pf (D) Decrease in current and frequency
Last Answer : B
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1.0k views
2 answers
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Apr 28, 2018
by
anonymous

Last Answer : The function of shunt in an ammeter is to by pass the current.
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462 views
1 answer
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Mar 21, 2018
by
anonymous

A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave?
Last Answer : A sinusoidal voltage of 5 Hz is applied to the field of a shunt generator. The armature voltage wave will be of 5 Hz.
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1 answer
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Mar 21, 2018
by
anonymous

Last Answer : A cumulatively compounded long shunt generator when operating as a motor would be differentially compounded long shunt.
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111 views
1 answer
asked
Mar 21, 2018
by
anonymous

The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be?
Last Answer : The e.m.f. induced in the armature of a shunt generator is 600 V. The armature resistance is 0.1 ohm. If the armature current is 200 A, the terminal voltage will be 580 V.
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669 views
1 answer
asked
Mar 21, 2018
by
anonymous

In a shunt generator the voltage build up is generally restricted by?
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145 views
0 answers
asked
Mar 21, 2018
by
anonymous

A shunt generator running at 1000 r.p.m. has generated e.m.f. as 200 V. If the speed increases to 1200 r.p.m., the generated e.m.f. will be nearly?
Last Answer : 200V/E2 = 1000/1200 E2= 240 V
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1.8k views
2 answers
asked
Mar 21, 2018
by
anonymous

Last Answer : If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens this will make armature to take heavy current, possibly burning it.
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158 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : The purpose of retardation test on D.C. shunt machines is to find out stray losses.
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75 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a manual shunt motor starter over load relay is connected in series and no volt relay in parallel with the load.
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1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : D.C. shunt motors are used for driving machine tools.
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85 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : If the speed of a D.C. shunt motor is increased, the back e.m.f. of the motor will increase.
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203 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : For a D.C. shunt motor if the excitation is changed torque will change but power will remain constant.
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168 views
1 answer
asked
Mar 20, 2018
by
anonymous
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Last Answer : The speed of a D.C. shunt motor can be increased by increasing the resistance in field circuit.
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135 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : The armature torque of the D.C. shunt motor is proportional to armature current.
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210 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : As the load is increased the speed of D.C. shunt motor will reduce slightly.
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142 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : The mechanical power developed by a shunt motor will be maximum when the ratio of back e.m.f. to applied voltage is 0.5.
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324 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be more than full-load current.
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367 views
1 answer
asked
Mar 20, 2018
by
anonymous

Last Answer : In case of D.C. shunt motors the speed is dependent on back e.m.f. only because flux is practically constant in D:C. shunt motors.
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250 views
1 answer
asked
Mar 20, 2018
by
anonymous
