A. mechanical energy into electrical energy
B. electrical energy into mechanical energy
C. magnetic energy into mechanical energy
D. magnetic energy into electrical energy
Related Mcqs:
- cmf generated by A.C dynamo depends upon_____________?
A. number of turns in the coil
B. magnetic field strength
C. frequency of rotation
D. all of above - A.C and D.C have the same______________?
A. effect in charging a capacitor
B. effect in charging a battery
C. effect while passing through an inductance
D. heating effect through a resistance - An alternating current or voltage________________?
A. fluctuates off and on
B. varies in magnitude alone
C. changes its direction again and again
D. changes its magnitude continuously and reverses its direction of flow after regularly recurring intervals. - Which one of the following functions like a motor ?
A. galvanometer
B. ammeter
C. voltmeter
D. all of above - Power loss in actual transformer is due to_________________?
A. Small output
B. Eddy currents and magnetic hysterias
C. Soft iron core
D. Back emf - Long distance transmission is easy for________________?
A. D.C voltage
B. A.C voltage
C. Half A.C voltage
D. Half D.C voltage - The out put voltage of a transformer is 3 times the input voltage then turns ratio will be________________?
A. 3-Jan
B. 3
C. 1
D. 6 - For long distance transmission the transformer used is_____________?
A. Step down
B. Input voltage and output voltage remain same
C. Step up
D. Amplifier is used - If the secondary coil has Ns turns and the primary Np turns the relation between secondary and primary voltages is given by_____________?
A. Vs/Vp = Np/Ns
B. Vs/Vp = Ns/Np
C. Vp/Vs = Ns/Np
D. Vp/Vs = Np/Ns - Self-inductance of a long solenoid is______________?
A. μoN2A
B. μoN2/A
C. μoN2
D. BA
