Exercise: Measurements And Instrumentation

Questions for: Measurements And Instrumentation

In a low power factor wattmeter, the resistance of pressure coil is more than in ordinary wattmeter.
A:
True
B:
False
C:
D:
Answer: A
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In which of the following instruments is the deflecting torque proportional to where L is inductance of coil and Q is deflection
A:
PMMC
B:
electrostatic
C:
moving iron
D:
both (a) and (b)
Answer: C
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An E transformer is a
A:
displacement transducer
B:
velocity transducer
C:
acceleration transducer
D:
pressure transducer
Answer: A
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To measure moisture in wood, the most suitable method is
A:
electric conduction
B:
electrical-capacitive
C:
absorption of radiation
D:
equilibrium-moisture Vs humidity
Answer: A
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RTD is generally suitable for temperature up to
A:
about 800°C
B:
about 1500°C
C:
about 200°C
D:
about 50°C
Answer: A
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