Mock test – SSC JE
#1. A circuit has inductance of 2 H. If the circuit current changes at the rate of 10A/sec, then self induced emf is…?
emf = L X di/dt = 2×10= 20V
#2. The main advantage of temporary magnet is that we can…?
#3. Dielectric loss is propotional to…?
#4. The B-H curve of…..will be a straight line passing through the origin?
#5. Hysteresis is the phenomenon in the magnetic circuit by which…?
#6. In a capacitor start single phase induction motor, the current in the…?
#7. The B-H curve of…..will be a straight line passing through the origin?
#8. Two holes are drilled in the disc on a diameter of energy meter to….?
#9. The magnetic material used for making permanent magnet is…..?
#10. In a three phase induction motor crawling happens at…?
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