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Aim

Theory

Pretest

Procedure

Simulation

Posttest

References

Feedback

Plot V-I characteristics of SCR.

Choose difficulty:

Beginner

Intermediate

Advanced

1. Choose the false statement

a: SCR is a bidirectional device Explanation

Explanation

b: SCR is a controlled device Explanation

Explanation

c: In SCR the gate is the controlling terminal Explanation

Explanation

d: SCRs are used for high-power applications Explanation

Explanation

2. In the SCR structure, the gate terminal is located

a: near the anode terminal Explanation

Explanation

b: near the cathode terminal Explanation

Explanation

c: in between the anode & cathode terminal Explanation

Explanation

d: none of the mentioned Explanation

Explanation

3. The static V-I curve for the SCR is plotted for

a: Ia (anode current) vs Ig (gate current), Va (anode – cathode voltage) as a parameter Explanation

Explanation

b: Ia vs Va with Ig as a parameter Explanation

Explanation

c: Va vs Ig with Ia as a parameter Explanation

Explanation

d: Ig vs Vg with Ia as a parameter Explanation

Explanation

4. What is the function of the gate in an SCR?

a: Controls conduction Explanation

Explanation

b: Acts as an output Explanation

Explanation

c: Maintains the current Explanation

Explanation

d: Provides insulation Explanation

Explanation

5. In what mode does an SCR operate if the gate is not triggered?

a: Forward conduction Explanation

Explanation

b: Forward blocking Explanation

Explanation

c: Reverse blocking Explanation

Explanation

d: Saturation Explanation

Explanation

6. Which of these parameters affects the holding current in an SCR?

a: Temperature Explanation

Explanation

b: Gate current Explanation

Explanation

c: Anode voltage Explanation

Explanation

d: All of the above Explanation

Explanation

7. How does increasing gate current influence SCR conduction?

a: Reduces holding current Explanation

Explanation

b: Increases holding current Explanation

Explanation

c: No effect Explanation

Explanation

d: Lowers threshold voltage Explanation

Explanation

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