127. Transducer is a device which
A. converts one form of power into another
B. converts one form of energy into another
C. helps in measuring electrical signal
D. is similar to a transformer
128. Apart from LVDT, linear displacement can also be sensed by
A. RVDT
B. capacitance transformer
C. thermocouple
D. sensistor
129. Strain gauge is used to
A. convert sound energy into electrical energy
B. sense temperature
C. convert electrical current into a mechanical displacement
D. to convert mechanical displacement into a change in resistance
130. Thermocouple transducer is used for
A. temperature measurement
B. velocity and vibration measurement
C. pressure measurement
D. acceleration measurement
131. Differential transformer transducer is used for the measurement of
A. displacement
B. liquid level
C. temperature
D. speech and music
132. Principle of Pirani gauge is based on
A. humidity of the medium
B. thermal condictivity of the medium
C. combustibility of the medium
D. electrical resistivity of the medium
133. A differential transformer is a
A. variable inductance transducer
B. variable pressure transducer
C. constant displacement transducer
D. constant pressure transformer
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