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Instrumentation Transducers
Instrumentation Transducers Basic
Quiz 1
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Q.1
Tacho generators are ______________
a) Zero-order system
b) First-order system
c) Second order system
d) None of the mentioned
Q.2
Current to force and current to torque conversion is possible only for a constant current source.
a) True
b) False
Q.3
Which of the following represents transfer function of tacho-generators?
a) Kg
b) 1/Kg
c) SKg
d) S2Kg
Q.4
Transfer function of force motor is _____________
a) Kg
b) SKg
c) Kf
d) SKf
Q.5
Most electrical indicating instruments are electromechanical systems since ________________
a) They are used to measure electric component
b) They are more precise
c) They require no external power to operate
d) They convert electrical quantity to mechanical quantity
Q.6
Torque developed by a DC motor will be proportional to armature current.
a) True
b) False
Q.7
Which of the following is the correct conversion in an electro mechanical system?
a) Electrical to electrical
b) Electrical to mechanical
c) Mechanical to electrical
d) Both electrical to mechanical and mechanical to electrical
Q.8
For a constant field dc motor, what is the relation between the mechanical time constant and armature resistance?
a) Direct proportionality
b) Inverse proportionality
c) Double
d) Equal
Q.9
Which of the following represents for torque speed characteristic for dc motor?
a) Positive slope
b) Negative slope
c) Slope zero
d) None of the mentioned
Q.10
What is the relation between eddy current damping coefficient and resistance in PMMC device?
a) Direct proportionality
b) Inverse proportionality
c) Constant
d) None of the mentioned
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