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Choose the correct answer from the followings: a) In Wheatstone bridge, when it is balanced the...

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Electrical Engineering

Choose the correct answer from the followings:

a) In Wheatstone bridge, when it is balanced the galvanometerreads

1. Infinity 2. Zero 3. 5 mA 4. 10 mA
b) In PMMC, dumping force helps .............

1. To move the pointer to read our measurements correctly 2. Toreset our readings back to zero 3. To stabilize the pointer duringtransition between readings 4. All the above
c) A current transformers are used for:

1. For cost effective measurement 2. For protections 3. To reducethe cost of relay and circuit-breaker in high current enviroemnt 4.All the above

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