Question

5. Commonly used elements for wire strain gauges are __________

a) nickel and copper

b) nickel and gold

c) gold and brass

d) silver and aluminum

6. Proper functioning of a strain gauge depends on __________

a) strain

b) stress

c) bonding

d) length of wire

7. Semiconductor gauges are more sensitive than metal gauges---------

(a)True

(b) False

8. A capacitive transducer works on the principle of ________

a) inductance

b) capacitance

c) resistance

d) reluctance

9. Capacitance can be varied in ________

a) 10 ways

b) 6 ways

c) 2 ways

d) 4 ways

10. Capacitive transducer displays ________

a) linear behaviour

b) non-linear behaviour

c) exponential behaviour

d) tangential behaviour

11. Frequency response of capacitive transducers is ________

a) high

b) medium

c) low

d) zero

12. What does a piezoelectric material generate in response to an applied forece?

a) Electricity

b) Sound

c) Movement

d) Heat

13. Piezoelectric materials are -----

a) Metals

b) polymers

c) ceramics

d) Composites

14. The vibration frequency of quartz

a) 1kHz

b) 10 kHz

c) 20 KHz

d) 30 KHz

15.The purpose of diaphragm of piezoelectric pressure sensors is --------------

a) To convert pressure to electricity

b) To protect the crystal

c) To protect vacuum space

d) To protect piezoelectric layers

16. An applied voltage will cause a piezoelectric crystals to .......

a) Change direction

b) Change chemical structure

c) Change shape

d) Change color

17. Which type of accelerometer is most widely used for measuring vibration and shock?

a) Capacitive

b) MEMS

c) Piezoelectric

d) Piezoresistive

18. MEMS-based accelerometers are typically:

a) Capacitive

b) Inductive

c) Microphone

d) Piezoelectric

e) Piezoresistive

f) Piezoinductive

Answer 1