Question:

A steel scale is slightly shorter when compared with a standard scale. This type of error is known as

A.

natural error

B.

systematic error

C.

instrumental error

D.

None of the above

Answer» c. instrumental error

Question:

Which of the following is not a self-generating transducer?

A.

Thermopile

B.

Ionization chamber

C.

Moving coil generator

D.

Photovoltaic cell

Answer» b. Ionization chamber

Question:

Which of the following primary transducer does not convert velocity to pressure?

A.

Orifice

B.

Venture

C.

Pitot tube

D.

Vanes

Answer» d. Vanes

Question:

A 4

 

A.99999
B.9999
C.1000
D.10000
E:19999

Answer» e. 19999

Question:

Which of the following material is used for photoconductive cells

A.

Selenium

B.

Thorium

C.

Mica

D.

Tungsten

Answer» a. Selenium

Question:

Odometer is used to measure

A.

threshold odours of gases

B.

composition of gases

C.

distances

D.

None of the above

Answer» c. distances

Question:

The ‘dead time’ of the instrument is

A.

The time required by an instrument for initial warming up

B.

The time required by an instrument to begin to respond to a change in the measured value

C.

The largest change of input quantity for which there is no output of the instrument

D.

None of the above

Answer» b. The time required by an instrument to begin to respond to a change in the measured value

Question:

For ocean sounding where the depth of water is too much and where continuous and accurate record of the depth of water below a boat or ship is to be made, the instrument generally used is known as

A.

Tellurometer

B.

Sound meter

C.

Sound box

D.

Fathometer

Answer» b. Sound meter

Question:

The fine wire of which material is most commonly used for resistance thermometer

A.

stainless steel

B.

Aluminium

C.

Nickel

D.

None of the above

Answer» c. Nickel

Question:

The melting point of tungsten is around

A.

2800?C

B.

1256?C

C.

3400?C

D.

1156?C

Answer» c. 3400?C