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DIAC MCQ Questions & Answers

DIAC MCQs : This section focuses on the "DIAC". These Multiple Choice Questions (MCQs) should be practiced to improve the DIAC skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

A SIDAC (Silicon diode for alternating current) does not conduct below a break-over voltage.

A. True
B. False

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Question 2

DIAC can act as AC switch.

A. True
B. False

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Question 3

DIAC is a unidirectional device.

A. True
B. False

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Question 4

DIAC starts to conduct current after some threshold voltage.

A. True
B. False

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Question 5

DIAC’s do not work with DC voltage.

A. True
B. False

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Question 6

DIAC’s get damaged when voltage of wrong polarity is applied at its terminals.

A. True
B. False

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Question 7

How many layers of semiconductor does a DIAC have?

A. 1
B. 2
C. 3
D. 4

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Question 8

How many minimum thyristors are required to make a TRIAC (Triode alternating current)?

A. 0
B. 1
C. 2
D. 3

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Question 9

How many terminals does a DIAC (Diode alternating current) have?

A. 1
B. 2
C. 3
D. 4

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Question 10

What is the breakdown voltage of three layered DIAC (Diode alternating current)?

A. Approximately 30 volts
B. Approximately 20 volts
C. Approximately 50 volts
D. Approximately 40 volts

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Question 11

What is the full form of DIAC?

A. Diode for alternating current
B. Diode attenuating current
C. Dioxide for analogous current
D. Diode analogous current

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Question 12

What is the full form of SIDAC?

A. Silicon diode for alternating current
B. Silicate diode for alternating current
C. Silicon dioxide for alternating current
D. Silicon diode for analogous current

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Question 13

What is the full form of TRIAC?

A. Triode attenuating current
B. Triode for alternating current
C. Trioxide for analogous current
D. Triode analogous current

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Question 14

Which is an example of DIAC?

A. OptoNCDT ILR 1030
B. OptoNCDT1420
C. NTE6408
D. EddyNCDT 3301

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Question 15

DIAC’s do not work with DC voltage.

A. True
B. False

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Question 16

DIAC’s get damaged when voltage of wrong polarity is applied at its terminals.

A. True
B. False

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