In normal operation of an SCR, gate is _____________w.r.t. cathode?
A. Positive
B. Negative
C. At zero potential
D. None of the above
SCR (Silicon Controlled Rectifiers)
An SCR is sometimes called ____________?
An SCR is sometimes called ____________?
A. Triac
B. Diac
C. Unijunction transistor
D. Thyristor
An SCR is a solid state equivalent of ______________?
An SCR is a solid state equivalent of ______________?
A. Triode
B. Pentode
C. Gas-filled triode
D. Tetrode
An SCR has three terminals viz ________________?
An SCR has three terminals viz ________________?
A. Cathode, anode, gate
B. Anode, cathode, grid
C. Anode, cathode, drain
D. None of the above
An SCR is made of_______________?
An SCR is made of_______________?
A. Germanium
B. Silicon
C. Carbon
D. None of the above
An SCR has ___________semiconductor layers?
An SCR has ___________semiconductor layers?
A. Two
B. Three
C. Four
D. None of the above
An SCR has __________ pn junctions?
An SCR has __________ pn junctions?
A. Two
B. Three
C. Four
D. None of the above
An SCR is turned off when ________________?
An SCR is turned off when ________________?
A. Anode current is reduced to zero
B. Gate voltage is reduced to zero
C. Gate is reverse biased
D. None of the above
If gate current is increased, then anode-cathode voltage at which SCR closes_________________?
If gate current is increased, then anode-cathode voltage at which SCR closes_________________?
A. Is decreased
B. Is increased
C. Remains the same
D. None of the above
In an SCR circuit, the angle of conduction can be changed by__________________?
In an SCR circuit, the angle of conduction can be changed by__________________?
A. Changing anode voltage
B. Changing gate voltage
C. Reverse biasing the gate
D. None of the above