This question was asked inSupervisor Instructor Electrical Part B Technical Paper 2026Question 99 of 120 published · Gujarat Subordinate Service Selection BoardOpen paper
Q99EasyInverters

How many transistors are required in a single-phase half-bridge inverter?

Answer & step-by-step solution
Correct answer: D. Two
Quick explanation

D — Two. A half-bridge uses two controlled switches in series across a split DC supply; a full bridge needs four.

Detailed solution (in the paper’s original language)

સમજૂતી

Single-phase half-bridge inverter માં split DC supply પર series માં બે main controlled switching devices વપરાય છે.

બન્ને switches alternate રીતે operate કરીને load પર positive અને negative half-cycle voltages આપે છે; તેથી બે transistors જરૂરી છે.

મુખ્ય ખ્યાલ

Half bridge → 2 switches; full bridge → 4 switches.

પરીક્ષા મુદ્દો

Inverter topology નામ સાથે switch count જોડીને યાદ રાખો.

ઝડપી ટ્રિક

Full bridge ના 4 switches ના અડધા → half bridge માં 2 switches.

બીજા વિકલ્પો ખોટા કેમ છે

4 switches single-phase full bridge માં હોય છે, half bridge માં નહીં.

સામાન્ય ભૂલ

Full bridge યાદ આવી જાય અને 4 પસંદ કરી દેવું.

Solution diagram – How many transistors are required in a single-phase half-bridge inverter?
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