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301.

A photo-electric device in which the resistance of the metal changes directly proportional to the ligh striking on it is known as

302.

How wire anemometers are generally used to

A.	Measure pressure of fluids	B.	Measure velocity of air steam
C.	Measure temperature of moving fluid	D.	Measure thermal conductivity of solids
E.	Measure magnetic properties

303.

The function of a transducer is

A.	To amplify the input signal	B.	To modify the input signal
C.	To convert the primary signal into a more useful quantity usually an electrical impulse	D.	To codify the input signal
E.	To decodify the input signal

304.

In instrumentation, registering is

A.	Production of continuous record on an instrument	B.	Conversion of signal from one form to another
C.	Indication by numbers or some other symbol of discrete increments, the value of some quantity	D.	To perform various manipulations before indicating or recording results
E.	None of the above

305.

Usually the range of an instrument is selected such that

A.	Minimum reading coincides with average value of working parameter	B.	Minimum reading coincides with minimum value of the working parameter
C.	For the working parameter the pointer direction is vertical	D.	For the working parameter the pointer deflection is about ? of the full scale

306.

Scale sensitivity is defined as

A.	Ratio of a change in scale reading to the corresponding change in pointer deflection	B.	Least reading of scale/range of scale
C.	Least reading of scale/unit measurable quantity	D.	Least count of scale/range of scale
E.	None of the above

307.

Thermocouples are generally used for accurate temperature measurement upto

308.

The commonly used material for thermocouples is

309.

For the measurement of temperature the transduction method could be

310.

For the measurement of viscosity the transduction method could be