Question:

The reliability of an instrument means

A.

The maximum useful life of an instrument

B.

The service of an instrument between two repairs

C.

The range in which the characteristics of an instrument remain linear

D.

The degree to which repeatability continues to remain within specified limits

Answer» d. The degree to which repeatability continues to remain within specified limits

Question:

Surface plates made of granite posses property

A.

are free from residual stresses

B.

there is less tendency for granite to creep

C.

granite does not corrode

D.

All of the above

Answer» d. All of the above

Question:

A thermistor is basically an instrument for the measurement of

A.

pressure

B.

flow

C.

speed

D.

temperature

Answer» d. temperature

Question:

In the above problem the thermal time constant will be

A.

2.55 hrs

B.

2.05 hrs

C.

1 hour

D.

1.44 hrs

Answer» d. 1.44 hrs

Question:

Which of the following flow measuring instrument is an area meter?

A.

Venturimeter

B.

Rotameter

C.

Pitot tube

D.

Hot wire anemometer

Answer» b. Rotameter