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Electrical Engineering
Electromagnetic Induction
Quiz 5
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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
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