In India, electrification of railway track was done for the first time in which of the following years?
A). 1820 - 1825
B). 1880 - 1885
C). 1925 - 1932
D). 1947 - 1954
1. Large capacity generators are invariably
2. Mains a.c. power is converrted into d.c. power for ___________
3. In a cable, the maximum stress under operating conditions is at
5. A synchronous machine with low value of short-circuit ratio has
7. Which of the following will happen if the thickness of refractory wall of furnace is increased?
8. Following motor is used where high starting torque and wide speed range control is required.
9. In a shaded pole motor, the shading coil usually consist of