20EE2E55-EMD-SQ1
Authored by Vidhya H
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University
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The unit of magnetic flux density is ___________.
AT/Wb
Wb/AT
Wb/m2
AT/m
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In DC generators, lap connected winding is used for _______ voltage and ______ current applications.
low, low
low, high
high, high
high, low
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The _________ loss is directly proportional to square of frequency.
eddy current
hysteresis
variable
copper
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Commutator of DC machines is made up of __________.
aluminum
silver
copper
carbon
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The direction of DC motor is given by _________ rule.
Lenz’s law
Flemming’s right hand rule
Ampere’s law
Flemming’s left hand rule
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Magnetically induced EMF is caused by______________
Variation in magnetic flux
Static magnetic field
Magnetic field due to moving charges
Magnetic field due to permanent magnets
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The force experienced by a current-carrying conductor in a magnetic field is _________.
Lorentz force
electrostatic force
gravitational force
nuclear force
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