Measurement and Instrumentation
A moving coil of a meter has 100 turns, and a length and depth of 10 mm and 20 mm respectively. It is postioned in a uniform radial flux density of 200 mT. The coil carries a current of 50 mA. The torque on the coil is

 100 Nm.
  200 Nm.
 1 Nm.
 2 Nm.

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Measurement and Instrumentation
Assertion (A): A hot wire ammeter has a cramped scale. Reason (R): The heat is proportional to square of current.

 Both A and R are true and R is not correct explanation of A.
 Both A and R are true and R is correct explanation of A.
 A is false and R is ture.
 A is ture and R is false.

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Measurement and Instrumentation
In AC circuits, the connection of measuring instruments cause loading effect errors which may effect

 only phase of the quantity being measured.
 only the magnitude of the quantity being measured.
 both of above.
 magnitude, phase and waveform of the quantity being measured.

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Measurement and Instrumentation
Assertion (A) : Precision is a necessary prerequisiteof accuracy. Reason (R) : Precision guarantees accuracy.

 A is false bur R is true
 Both A and R are true but R is NOT the correct explanation of A
 A is true but R is false
 Both A and R are true and R is the correct explanation of A

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