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Worksheetsunit 5 sliptest
Total questions: 10
Worksheet time: 5mins
1. A thyristor (SCR) is a
P-N-P device
N-P-N device
P-N-P-N device
P-N device
The SCS (Silicon Controlled Switch) is a
two terminal device
three terminal device
four terminal device
five terminal device
The ________ is like a diac with a gate terminal.
triac
SCR
SCS
none of the above
The ________ is a semiconductor device that can control power.
thyristor
diode
capacitor
transistor
Which of the following devices is used for switching applications?
SCR
LED
inductor
resistor
A triac can conduct current in ________ directions.
one
two
three
four
3. An SCR is a
four layer, four junction device
four layer, three junction device
four layer, two junction device
three layer, single junction device
5. In the SCR structure the gate terminal is located
near the anode terminal
near the cathode terminal
in between the anode & cathode terminal
none of the mentioned
For the SCR to remain in the ON (conducting) state
gate signal is continuously required
no continuous gate signal is required
no forward anode-cathode voltage is required
negative gate signal is continuously required
________ are semiconductor thyristor devices which can be turned-on by light of appropriate wavelengths.
LGTOs
LASERs
MASERs
LASCRs
