11. The weight of copper of both armature and field windings decreases with _____ in number of poles.
12. Which of the following instruments indicate the instantaneous value of the electrical quantity being measured at the time at which it is being measured ?
13. In Weston synchronoscope the moving coil is connected across
14. The winding where dummy coils are used is sometimes called
15. By which of the following methods the temperature rise of windings and other parts may be determined ?
16. In a dynamometer 3-phase power factor meter, the planes of the two moving coils are at
17. With conventional hydrogen cooling it is possible to increase the rating of a single unit to
18. Which of the following is the commonly used type of electromagnets ?
19. The noise produced by a ______ cooled machine is less as the rotor moves in a medium of smaller density.
20. If the current in a capacitor leads the voltage by 80°, the loss angle of the capacitor is
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