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10. In order to get high sensitivity a potentiometer should have
A) High input voltage B) High value of wire length
C) OnlyA D) Both A and B

11. The undesirable characteristic for a strain gauge is
A) Low resistance temperature coefficient

B) Should have high hysteresis

) Good linear characteristics

) High frequency response

மூட

12. Variable inductance transducer works on
A) Change in self inductance

)

B) Change of mutual inductance

C) Production of eddy currents

D) All of the above
13. Which among the following is a synthetic piezoelectric material ?

A) Quartz B) Lithium sulphate

C) Rochelle salt 0) 800 8 ೩7೮೦
14. Hall effect transducer can be used for the measurement of

A) Current B) Flow C) Humidity D) Capacitance
15. Extremely low levels of luminous intensity can be detected using

A) Photo diodes B) Photo transistors

C) Photomultiplier tubes D) None of these
16. Which of the following is not a unit of pressure ?

A) bar B) psi C) Rankine D) Torr
17. Which one of the following fluid is used in manometer ?

A) Water B) Red oil

C) Mercury D) All the above
18. Thermal conductivity gauge used for pressure measurement is

A) McLeod gauge B) Pirani gauge

C) Capsule gauge D) Piezoelectric gauge

19. Rapid changes of pressure can be measured using
A) Barometer B) Piezoelectric pressure gauge
C) Bourdon tube pressure gauge D) Diaphragm gauge

A -4-