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Electronic Devices - PNPN

Exercise : PNPN - Filling the Blanks
21.
The anode gate connection can be used to turn the SCS device ________.
on
off
neither on nor off
either on or off
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
________ is (are) the element(s) of a unijunction transistor's equivalent circuit.
One fixed resistor
A variable resistor
A diode
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
To turn on an SCS device, a ________ pulse must be applied to the anode gate terminal; to turn off the device, a ________ pulse is required.
positive, positive
negative, positive
positive, negative
negative, negative
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In a half-wave variable-resistance phase control operation, the control cannot be extended past a ________ phase displacement.
45º
90º
135º
180º
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
________ are areas of application for SCRs.
Relay controls
Time-delay circuits
Motor controls
All of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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