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.Management Sciences
Category: Electrostatics
The capacity of capacitor bank used in power factor correction is expressed in terms of____________?
A. kW
B. kVA
C. kVAR
D. volts
SI unit of the permittivity of free space is________________?
A. Nm2C2
B. N-1mC-2
C. NmC-1
D. N-1m-2C2
For which of the following parameter variation, the capacitance of the capacitor remains unaffected ____________?
A. Distance between plates
B. Area of the plates
C. Nature of dielectric
D. Thickness of the plates
A region around a stationary electric charge has__________?
A. an electric field
B. a magnetic field
C. both A. and (6)
D. none of the above
An uncharged conductor is placed near a charged conductor, then_____________?
A. the uncharged conductor gets charged by conduction
B. the uncharged conductor gets charged by induction and then attracted towards the charging body
C. the uncharged conductor is attracted first and then charged by induction
D. it remains as such
If a third equal and similar charge is placed between two equal and similar charges, then this third charge will_____________?
A. move out of the field of influence of the two charges
B. remain in stable equilibrium
C. not be in equilibrium
D. be in unstable equilibrium
Dielectric strength of medium____________?
A. increases with rise in temperature
B. increases with moisture content
C. is same for all insulating materials
D. none of the above
Which of the following expression is correct for electric field strength___________?
A. E = D/E
B. E = D2/t
C. E = jtD
D. E= nD2
In a non-uniform electric field a polar molecule will experience____________?
A. Net torque
B. Net force
C. both series and parallel combinations
D. zero
The force between two charges is 120 N. If the distance between the charges is doubled, the force will be________________?
A. 60 N
B. 30 N
C. 40 N
D. 15 N
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