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Test: Other Thyristor Members - Electrical Engineering (EE) MCQ


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20 Questions MCQ Test - Test: Other Thyristor Members

Test: Other Thyristor Members for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Test: Other Thyristor Members questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Other Thyristor Members MCQs are made for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Other Thyristor Members below.
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Test: Other Thyristor Members - Question 1

_________ device from the thyristor family has its gate terminal connected to the n-type material near the anode.

Detailed Solution for Test: Other Thyristor Members - Question 1

PUT is Programmable Unijunction Transistor which is a p-n-p-n device just like the SCR with its gate connected to the n-type material.

Test: Other Thyristor Members - Question 2

The Programmable Unijunction Transistor (PUT) turns on & starts conducting when the

Detailed Solution for Test: Other Thyristor Members - Question 2

 The device only starts to conduct when the forward anode to cathode voltage exceeds the applied gate to cathode voltage.

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Test: Other Thyristor Members - Question 3

 The equivalent circuit of SUS (Silicon Unilateral Switch) consists of

Detailed Solution for Test: Other Thyristor Members - Question 3

It is a diode connected in anti-parallel with a PUT.

Test: Other Thyristor Members - Question 4

 From the following list of devices, choose the device that only turns-on for a fixed-value of anode-cathode voltage

Detailed Solution for Test: Other Thyristor Members - Question 4

Unlike the other devices the SUS only turns-on for a fixed value of anode to cathode voltage.

Test: Other Thyristor Members - Question 5

 The SCS (Silicon Controlled Switch) is a

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The SCS is a four terminal device A,K,KG & AG.

Test: Other Thyristor Members - Question 6

The SCS is a four layer, four terminal thyristor. Can be turned on by

Detailed Solution for Test: Other Thyristor Members - Question 6

The SCS has two gates, anode-gate and cathode-gate. Either of the gates could be used to turn on the device.

Test: Other Thyristor Members - Question 7

The SCS (Silicon Controlled Switch) can be turned on by two methods, by applying __________ and __________

Detailed Solution for Test: Other Thyristor Members - Question 7

 Either of the gates could be used to turn on the device.

Test: Other Thyristor Members - Question 8

 Which of the following devices provide complete isolation between triggering circuit and power circuit?

Detailed Solution for Test: Other Thyristor Members - Question 8

Complete Isolation between triggering circuit & power circuit is the major advantage of using LASCR as they are light activated or light trigged.

Test: Other Thyristor Members - Question 9

The DIAC can be represented by

Detailed Solution for Test: Other Thyristor Members - Question 9

The DIAC is nothing but a bi-directional diode.

Test: Other Thyristor Members - Question 10

The TRIAC can be represented by

Detailed Solution for Test: Other Thyristor Members - Question 10

The TRIAC is a bidirectional SCR.

Test: Other Thyristor Members - Question 11

The SITH (Static Induction Thyristor) is a

Detailed Solution for Test: Other Thyristor Members - Question 11

 It is just like a GTO but it is p-n-n device.

Test: Other Thyristor Members - Question 12

The SITH has

Detailed Solution for Test: Other Thyristor Members - Question 12

The SITH has 3 terminals viz. gate, anode and cathode.

Test: Other Thyristor Members - Question 13

The SITH is a

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The Static Induction Thyristor is a p+ n+ diode with p+ electrodes.

Test: Other Thyristor Members - Question 14

The SITH is a

Detailed Solution for Test: Other Thyristor Members - Question 14

The SITH unlike other devices is a normally on-device which can be switched off as and when required

Test: Other Thyristor Members - Question 15

The SITH will act as a diode when the

Detailed Solution for Test: Other Thyristor Members - Question 15

Load current flows from anode to cathode as the p+ junction is forward biased.

Test: Other Thyristor Members - Question 16

In SITH, the magnitude of the anode current can be controlled by

Detailed Solution for Test: Other Thyristor Members - Question 16

Controlling the negative gate bias controls the main anode current.

Test: Other Thyristor Members - Question 17

 The SITH

Detailed Solution for Test: Other Thyristor Members - Question 17

 It has no reverse blocking capabilities due to emitter-shorting

Test: Other Thyristor Members - Question 18

 The TRIAC’s terminals are

Detailed Solution for Test: Other Thyristor Members - Question 18

 TRAIC has MT1, MT2 and a gate.

Test: Other Thyristor Members - Question 19

The RCT (Reverse Conducting Thyristor) has

Detailed Solution for Test: Other Thyristor Members - Question 19

A diode in anti-parallel with the SCR is called as a RCT.

Test: Other Thyristor Members - Question 20

The TRIAC is most sensitive in the _________ quadrants

Detailed Solution for Test: Other Thyristor Members - Question 20

It is the most sensitive when all the voltage,current and gate signal have the same polarities.

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