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SCR (Silicon Controlled Rectifiers)

When an SCR is turned on, the voltage across it is about _____________?

August 11, 2021December 21, 2018 by admin
When an SCR is turned on, the voltage across it is about _____________?

A. Zero
B. 10 V
C. 1 V
D. 1 V

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An SCR is a ____________ triggered device?

August 11, 2021December 21, 2018 by admin
An SCR is a ____________ triggered device?

A. Voltage
B. Current
C. Voltage as well as current
D. None of the above

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An SCR is made of silicon and not germanium because silicon _________________?

August 11, 2021December 21, 2018 by admin
An SCR is made of silicon and not germanium because silicon _________________?

A. Is inexpensive
B. Is mechanically strong
C. Has small leakage current
D. Is tetravalent

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In an SCR circuit the supply voltage is generally ___________ that of breakover voltage?

August 11, 2021December 21, 2018 by admin
In an SCR circuit the supply voltage is generally ___________ that of breakover voltage?

A. Equal to
B. Less than
C. Greater than
D. None of the above

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The normal way to turn on a SCR is by______________?

August 11, 2021December 21, 2018 by admin
The normal way to turn on a SCR is by______________?

A. Breakover voltage
B. Appropriate anode current
C. Appropriate gate current
D. None of the above

Categories SCR (Silicon Controlled Rectifiers) Leave a comment

An SCR combines the features of ____________?

August 11, 2021December 21, 2018 by admin
An SCR combines the features of ____________?

A. A rectifier and resistance
B. A rectifier and transistor
C. A rectifier and capacitor
D. None of the above

Categories SCR (Silicon Controlled Rectifiers) Leave a comment

An SCR is turned off by _________________?

August 11, 2021December 21, 2018 by admin
An SCR is turned off by _________________?

A. Reducing anode voltage to zero
B. Reducing gate voltage to zero
C. Reverse biasing the gate
D. None of the above

Categories SCR (Silicon Controlled Rectifiers) Leave a comment

The control element of an SCR is ______________?

August 11, 2021December 21, 2018 by admin
The control element of an SCR is ______________?

A. Cathode
B. Anode
C. Anode supply
D. Gate

Categories SCR (Silicon Controlled Rectifiers) Leave a comment

In the normal operation of an SCR, anode is __________ w.r.t. cathode?

August 11, 2021December 21, 2018 by admin
In the normal operation of an SCR, anode is __________ w.r.t. cathode?

A. At zero potential
B. Negative
C. Positive
D. None of the above

Categories SCR (Silicon Controlled Rectifiers) Leave a comment

An SCR behaves as a____________switch?

August 11, 2021December 21, 2018 by admin
An SCR behaves as a____________switch?

A. Unidirectional
B. Bidirectional
C. Mechanical
D. None of the above

Categories SCR (Silicon Controlled Rectifiers) Leave a comment
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