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Measurement and Instrumentation

Measurement and Instrumentation
The rectifier instrument is not free from

All of the listed here
Temperature error
Wave shape error
Frequency error

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Measurement and Instrumentation
The scale of hot wire ammeter is

 Cramped.
 Absloute linear.
 Linear.
  Non Linear.

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Measurement and Instrumentation
The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?

 ±0.5%
 ± 1.5%
 ± 3.0%
 ±3.5%

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Measurement and Instrumentation
For the AC bridge circuit shown in figure at balance the value of Rd will be

 (Rc/Ra).Rb.
 (Ra/Rc).Rb.
 (Rc/Rb).Ra.
 (Rb/Rc).Ra.

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Measurement and Instrumentation
A PMMC voltmeter is connected across a series combination of a DC voltage source V1 = 2 V and an AC voltage source V2 = 3sin4t, the voltmeters reads

 5 V.
 (2 + √3/2)V.
 0 V.
 2 V.

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Measurement and Instrumentation
The current coil of a wattmeter is connected to the CT of R-phase. The potential coil is connected across Y and B phases. The wattmeter measures

Reactive power of R phase
Active power in R phase
Active power of Y phase
Power proportional to 3 phase power if the load is balanced

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MORE MCQ ON Measurement and Instrumentation

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