Measurement and Instrumentation A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as 1000 rev/KWh. 960 rev/KWh. 3600 rev/KWh. 3750 rev/KWh. 1000 rev/KWh. 960 rev/KWh. 3600 rev/KWh. 3750 rev/KWh. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The full-scale deflection current of an ammeter is 1 mA and its internal resistance is 100°hm. If this meter is to have full deflection at 5A, what is the value of the shunt resistance to be used? 49.99 Ohms 2 Ohms 1/49.99 ohms 1 Ohm 49.99 Ohms 2 Ohms 1/49.99 ohms 1 Ohm ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation The given figure shows wein bridge connection for frequency measurement. C and R are variables and gang together. For balanced condition the expression for frequency is f = 1/2πCR when R1 = 2R2. R1 = R2. R1 = 3R2. R1 = R2/2. R1 = 2R2. R1 = R2. R1 = 3R2. R1 = R2/2. ANSWER DOWNLOAD EXAMIANS APP
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 200 Nm. 100 Nm. 2 Nm. 1 Nm. 200 Nm. 100 Nm. 2 Nm. 1 Nm. ANSWER DOWNLOAD EXAMIANS APP
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 correct explanation of A. Both A and R are true and R is not correct explanation of A. A is false and R is ture. A is ture and R is false. Both A and R are true and R is correct explanation of A. Both A and R are true and R is not correct explanation of A. A is false and R is ture. A is ture and R is false. ANSWER DOWNLOAD EXAMIANS APP
Measurement and Instrumentation In measurement system, the function of the signal manipulating elements is to to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. change the magnitude of the input signal while retaining its identity. change the quantity under measurement to an analogues signal. to perform non liner operation like clipping filtering, chopping and clamping. to perform linear operation like addition and multiplication. change the magnitude of the input signal while retaining its identity. change the quantity under measurement to an analogues signal. ANSWER DOWNLOAD EXAMIANS APP
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