Q.1
A coil with negligible resistance hasacross it withmA. The inductive reactance is
  • 50 ohms
  • 500 ohms
  • 1000 ohms
  • 5000 ohms
Q.2
Reversing the field or the current will reverse the force on the conductor.
  • Yes
  • No
Q.3
The self inductances of two coils are 8 mH andmH. If the coefficient of coupling is 0.the mutual inductance of the coils is
  • 4 mH
  • 5 mH
  • 6 mH
  • 12 mH
Q.4
An open coil has
  • Zero resistance and inductance
  • Infinite resistance and zero inductance
  • Infinite resistance and normal inductance
  • Zero resistance and high inductance
Q.5
Which of the following is unit of inductance?
  • Ohm
  • Henry
  • Ampere turns
  • Weber/metre
Q.6
Which of the following is not a unit of inductance?
  • Henry
  • Coulomb/volt ampere
  • Volt second per ampere
  • All of the above
Q.7
TwouH coils in series without mutual coupling have a total inductance of
  • 300 uH
  • 600 uH
  • 150 uH
  • 75 uH
Q.8
In case all the flux from the current in coil 1 links with coilthe coefficient of coupling will be
  • 2.0
  • 1.0
  • 0.5
  • Zero
Q.9
Which of the following circuit elements will oppose the change in circuit current?
  • Capacitance
  • Inductance
  • Resistance
  • All of the above
Q.10
Which circuit element(s) will oppose the change in circuit current?
  • Resistance only
  • Inductance only
  • Capacitance only
  • Inductance and capacitance
Q.11
The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as
  • Self-inductance
  • Mutual inductance
  • Series aiding inductance
  • Capacitance
0 h : 0 m : 1 s