General instrumentation

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University
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12 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following is the fundamental operation in the discrete Fourier transform?
Convolution
Differentiation
Integration
Modulation
2.
MULTIPLE SELECT QUESTION
20 sec • 1 pt
Which type of signal is represented by discrete values?
Nois signal
Non linear
Analog
Digital
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In direct computations of DFT the total number of complex additions are given by
N2-N
N-1
N+1
2N
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The rotor slots are slightly skewed in squirrel cage induction motor to
provide ease of fabrication.
reduce the magnetic hum and locking tendency of rotor.
increase the strength of rotor bars.
decrease the amount of copper to be used.
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip?
50Hz
2.5Hz
1 Hz
2HZ
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
The rotor of an induction motor rotates in the direction of the rotation of stator field in order to
Reduce the relative speed between the rotating stator field and the stationary rotor conductors
Oppose the rotor current
Increase the relative speed between the rotating stator field and stationary rotor conductors
None of the above
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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