
SSD Unit 2 & 3
Authored by MURALIKRISHNA K
Science
University
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18 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following devices should be used as a switch for high power and high voltage application?
a)TRIAC
b)Thyristor
c)GTO
d) MOSFET
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A four quadrant chopper cannot be operated as
a)One quadrant chopper
b)Cyclo converter
c)Inverter
d)Bidirectional rectifier
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A two quadrant DC to DC chopper can operate with which of the following load conditions?
a) +Ve voltage ,+Ve current
b) –Ve voltage ,+Ve current
c) –Ve Voltage,-Ve Current
d)+Ve voltage ,_Ve current
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
For the high frequency choppers, the device that is preferred is
a) Triac
b)Thyristor
c)Transistor
d)GTO
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which is the most efficient way of controlling a DC shunt motor below rated speed
a)Armature resistance control
b) Armature Voltage control
c) Field resistance control
d)Diverter resistance control in field circuit
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In which of the following control methods, the no load speed of a DC motor can be increased beyond rated value.
a)Armature resistance control
b) Armature Voltage control
c) Field resistance control
d) Controlling resistance in parallel with armature
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which braking method is the best method for obtaining high braking torque?
a) Plugging
b) Regenerative braking
c) Rheostatic braking
d) Dynamic braking
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