Rotor rheostat control method of speed control is used for
A). Squirrel-cage induction motors only
B). Both (A) and (B)
C). Both (A) and (B)
D). None of the above
1. In D.C. motor which of the following can sustain the maximum temperature rise?
2. For measurements on high voltage capacitors, the suitable bridge is
6. Emitter follower is a ___________ circuit
9. A crystal diode has forward resistance of the order of ___________
10. Hard steel is suitable for making permanent magnets because