Thyristors MCQs : This section focuses on the "Thyristors" in Electric Drives. These Multiple Choice Questions (MCQ) should be practiced to improve the Electric Drives skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A ______________ is a solid-state semiconductor device with four layers of alternating P- and N-type materials.
A. Transistors
B. Resistive Loads
C. Thyristor
D. None of the above
Question 2
SCR stands for?
A. source-controlled rectifier
B. silicon-controlled rectifier
C. source-current rectifier
D. silicon-current rectifier
Question 3
The thyristor is a ________ layered, _______ terminal semiconductor device, with each layer consisting of alternately N-type or P-type material
A. 3, 4
B. 3, 3
C. 4, 4
D. 4, 3
Question 4
Which blocking mode voltage is applied in the direction that would be blocked by a diode?
A. Forward conducting mode
B. Reverse blocking mode
C. Forward blocking mode
D. All of the above
Question 5
The silicon controlled rectifier (SCR) or thyristor proposed by William Shockley in ?
A. 1920
B. 1930
C. 1940
D. 1950
Question 6
For successful commutation circuit turn-off time ______ device turn-off time
A. less than
B. greater than
C. equal to
D. negation
Question 7
SCR is a __________ device
A. Uncontrolled
B. Fully controlled
C. Semi-controlled
D. Voltage
Question 8
Which of the following is used to protect SCR from overcurrent?
A. Heat sink
B. Snubber circuit
C. Zener diode
D. Fuse
Question 9
The value of latching current is more than holding current.
A. TRUE
B. FALSE
C. Can be true or false
D. can not say
Question 10
The thyristor has three p-n junctions.
A. TRUE
B. FALSE
C. Can be true or false
D. can not say