A dynamometer wattmeter can be used for
A). Only Direct Current
B). Only Active Current
C). Both A & B
D). None of the above
Both A & B
Dynamometer type wattmeter is used for the measurement of A.C. as well as D.C. power. It consists of a fixed coil forming the current coil whereas the moving coil forms the potential coil.
1. Systems running more than one process concurrently are called ______________
2. The best conductor of heat among the following is
4. Purpose of an optical filter is to
5. Light houses are places with powerful lights to :
6. A boat will submerge when it displaces water equal to its own
7. Device used for the detection and measurement of all types of radiation (alpha, beta and gamma)
8. Pipelines in cold countries often burst in winter because
9. The frequency of ultrasound wave is typically
10. Amount of water vapour in the atmosphere is measured in terms of