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 metalgauges---------
(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 toan 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 formeasuring 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
