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Process Control and Instrumentation

Process Control and Instrumentation
Relationship between absorption/evolution of heat at the thermocouple junctions and the current flow in the circuit is given by __________ effect.

Peltier
Thomson
None of these
Seebeck

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Process Control and Instrumentation
For an input forcing function, X(t) = 2t², the Laplace transform of this function is

2/s²
4/s³
4/s²
2/s³

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Process Control and Instrumentation
Gain margin is equal to the

Gain in P-I controller
Reciprocal of amplitude ratio
Gain in P controller
Amplitude ratio

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Process Control and Instrumentation
The closed loop pole of a stable second order system could be

One real positive and the other real negative
Both real and positive
Complex conjugate with positive real parts
Both real and negative

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Process Control and Instrumentation
Response of a system to a sinusoidal input is called __________ response.

Unit step
None of these
Frequency
Impluse

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Process Control and Instrumentation
Strain gage pressure transducers are used to measure __________ pressures.

Neither A nor B
Gage as well as vacuum
Both A & B Here
Absolute as well as differential

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