Power Electronics MCQ Questions & Answers | ECE

A. Breakdown current

B. Trigger current

C. Holding current

D. Threshold current

A. 0.686

B. 0.866

C. 0.78

D. 0.9

A. ac property of the device at the desired operating point

B. dc property of the device at all operating points

C. complete ac and dc behaviour of the device at all operating points

D. ac property of the device at all operating points

A. TRIAC

B. DIAC

C. SCR

D. GTO

A. THD = 0.1; P₁ = 64 W and P = 64.64 W

B. THD = 0.2; P₁ = 32 W and P = 32.32 W

C. THD = 0.1; P₁ = 32 W and P = 32.32 W

D. THE = 0.2; P₁ = 64 W and P = 64.32 W

A. gate current alone

B. bandgap of the semiconductor alone

C. gate current and the semiconductor bandgap respectively

D. semiconductor bandgap and the gate current respectively

A. Anode circuit voltage only

B. Anode circuit current only

C. Anode circuit current and voltage

D. Anode circuit current, voltage and time

A. $$\frac{{4 \times {\eta _1} \times {\eta _2} \times {\eta _3}}}{{{\eta _2}{\eta _3} + 2 \times {\eta _3} + {\eta _2}}}$$

B. $$\frac{{{\eta _1} \times {\eta _2} \times {\eta _3}}}{{{\eta _2}{\eta _3} + 2 \times {\eta _3} + {\eta _2}}}$$

C. $$\frac{{4 \times {\eta _1} \times {\eta _2} \times {\eta _3}}}{{{\eta _2}{\eta _3} + {\eta _2} + {\eta _3}}}$$

D. $$\frac{{2 \times {\eta _1} \times {\eta _2} \times {\eta _3}}}{{{\eta _2}{\eta _3} + {\eta _2} + {\eta _3}}}$$

A. DC - DC converter

B. AC - DC converter

C. Inverter

D. AC - AC converter

A. Drain, source, gate

B. Two main terminal and a gate terminal

C. Cathode, anode, gate

D. None of the above