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Measurement and Instrumentation

Measurement and Instrumentation
Which wave has the least form factor?

Triangular wave
Rectangular wave
Sine wave
Square wave

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Measurement and Instrumentation
The quantity 1/√(∈0 × μ0) in SI units has the

 dimension LT-1.
 speed of light.
 none of these.
 both ‘a’ and ‘b’.

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Measurement and Instrumentation
A transducer measures a range of 0 – 200 N force with a resolution of 0.15 percent of full scale. What is the smallest change which can be measured by this transducer ?

 3.33 N
 0.15 N
 6.66 N
 0.3 N

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Measurement and Instrumentation
The pressure coil of a wattmeter should be connected on the supply side of the current coil when

None of these
Load impedance is high
Supply voltage is low
Load impedance is low

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

  - 597 W.
 + 795 W.
 - 795 W.
 + 597 W.

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Measurement and Instrumentation
What is the approximate input impedance of a CRO?

 100 MΩ
 1 MΩ
 0
 10 MΩ

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