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Month: December 2018

A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is____________?

August 11, 2021December 15, 2018 by admin
A single core cable used on 33000 V has conductor diameter 10 mm and the internal diameter of sheath 25 mm. The maximum electrostatic stress in the cable is____________?

A. 62 x 105 V/m
B. 72 x 105 V/m
C. 82 x 105 V/m
D. 92 x 105 V/m

Categories Electrostatics

capacitors are used for audio frequency and radio frequency coupling and tuning ?

August 11, 2021December 15, 2018 by admin
capacitors are used for audio frequency and radio frequency coupling and tuning ?

A. Air
B. Mica
C. Plastic film
D. Ceramic

Categories Electrostatics

The units of volume charge density are___________?

August 11, 2021December 15, 2018 by admin
The units of volume charge density are___________?

A. Coulomb/meter
B. Coulomb/meter
C. Coulomb/meter
D. Coulomb/meter

Categories Electrostatics

Which of the following capacitors will have the least value of breakdown voltage________ ?

August 11, 2021December 15, 2018 by admin
Which of the following capacitors will have the least value of breakdown voltage________ ?

A. Mica
B. Paper
C. Ceramic
D. Electrolytic

Categories Electrostatics

Which capacitor will be physically smaller for the same ratings ___________?

August 11, 2021December 15, 2018 by admin
Which capacitor will be physically smaller for the same ratings ___________?

A. Ceramic capacitor
B. Paper capacitor
C. Both will be of equal size
D. None of the above

Categories Electrostatics

A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?

August 11, 2021December 15, 2018 by admin
A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?

A. Ceramic capacitor
B. Mica capacitor
C. Both will have identical value of capacitance
D. It depends on applied voltage

Categories Electrostatics

The capacity of capacitor bank used in power factor correction is expressed in terms of____________?

August 11, 2021December 15, 2018 by admin
The capacity of capacitor bank used in power factor correction is expressed in terms of____________?

A. kW
B. kVA
C. kVAR
D. volts

Categories Electrostatics

The relative permittivity of free space is given by__________?

August 11, 2021December 15, 2018 by admin
The relative permittivity of free space is given by__________?

A. 1
B. 10
C. 100
D. 1000

Categories Electrostatics

A gang condenser is a____________?

August 11, 2021December 15, 2018 by admin
A gang condenser is a____________?

A. polarised capacitor
B. variable capacitor
C. ceramic capacitor
D. none of the above

Categories Electrostatics

The unit of capacitance is__________?

August 11, 2021December 15, 2018 by admin
The unit of capacitance is__________?

A. henry
B. ohm
C. farad
D. farad/m

Categories Electrostatics
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