Q. The operating voltage of a megger is about

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Q. An ohmmeter is a

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Q. Loading effect is primarily caused by instruments having

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Q. Capacitive transducer is superior to inductive type for measurement of capacitance because of

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Q. Which of the following effects is used in measurement of magnetic flux?

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Q. It is required to measure pressure using LVDT. The additional device needed is

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Q. Which of the following quantities have same dimension in emu and esu?

1. Current
2. Electrical power
3. Electrical energy

Select the answer as per following codes

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Q. In a dynamometer instrument, the moving coil is pressure coil.

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Q. Load cell uses

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Q. Assertion (A): A dc potentiometer measures the true open circuit emf of a source.

Reason (R): At balance point, a dc potentiometer does not draw any current from the source.

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Q. In a CRO the Y plates are oriented

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Q. The accuracy of an instrument is determined by

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Q. If σ standard deviation, probable error

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Q. Assertion (A): In two wattmeter method of 3 phase power measurement, one of the wattmeters would read negative if power factor of load is less than 0.5.

Reason (R): In two wattmeter method of 3 phase power measurement, both the wattmeters would show equal readings if power factor of load is unity.

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Q. In a megger the moving coil meter has a permanent magnet.

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Q. The accuracy of a multimeter is about

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Q. Induction wattmeter is an absolute instrument.

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Q. In a current transformers

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Q. The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 μ sec/cm. The lowest frequency which can be fully displayed on the screen is

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Q. Eddy currents are essential for the deflecting torque of an induction wattmeter.

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