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.Management Sciences
Category: Electrostatics
In a cable capacitor, voltage gradient is maximum at the surface of the______________?
A. earth
B. conduction
C. sheath
D. insulator
A 25eV electron has a speed of______________?
A. 2 x 106m/sec
B. 3 x 106m/sec
C. 5 x 106m/sec
D. 4 x 106m/sec
If metallic conductor is charged negatively then its weight______________?
A. Remains same
B. First increases then decreases
C. Decreases then increases
D. Increases for a while
In a charged capacitor the energy resides in________________?
A. magnetic hield
B. electric field
C. nuclear field
D. gravitational field
capacitors are used for audio frequency and radio frequency coupling and tuning ?
A. Air
B. Mica
C. Plastic film
D. Ceramic
The dissipation factor of a good dielectric is of the order of____________?
A. 0.0002
B. 0.002
C. 0.02
D. 0.2
Electric intensity at any point in an electric field is equal to the at that point?
A. electric flux
B. magnetic flux density
C. potential gradient
D. none of the above
at a point is equal to the negative potential gradient at that point?
A. Electric intensity
B. Electric flux
C. Magnetic flux
D. Magnetic flux density
The ohmmeter reading for a short circuited capacitor is____________?
A. infinity
B. few kilo ohms
C. few megohms
D. zero
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