GATE EE 1997 | Power Semiconductor Devices Question 29 | Power Electronics

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GATE EE 1997

MCQ (Single Correct Answer)

-0.3

If a diode is connected in anti - parallel with a thyristor, then

Both turn off power loss and turn off time decreases

Turn-off power loss decreases but turn - off -time increases

Turn-off power loss increases, but turn off time decreases

None of the above

GATE EE 1996

MCQ (Single Correct Answer)

-0.3

Which semiconductor power device out of the following is not a current triggered device?

Thyristor

$$G.T.O$$

Triac

$$MOSFET$$

GATE EE 1996

MCQ (Single Correct Answer)

-0.3

The Triac can be used only in

Inverter

Rectifier

Multiquadrant chopper

Cycloconverter

GATE EE 1996

MCQ (Single Correct Answer)

-0.3

Which of the following does not cause permanent damage of an $$SCR?$$

High current

High rate of rise of current

High temperature rise

High rate of rise of voltage

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Electric Circuits

Network Elements Network Theorems Three Phase Circuits Transient Response Sinusoidal Steady State Analysis Graph Theory Two Port Networks

Electromagnetic Fields

Time Varying Fields Electrostatics Magnetostatics

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Linear Time Invariant Systems Continuous and Discrete Time Signals Continuous Time Signal Fourier Transform Continuous Time Periodic Signal Fourier Series Discrete Time Signal Z Transformation Miscellaneous Continuous Time Signal Laplace Transform Sampling Theorem

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Parameters and Performance of Transmission Lines Power Generation Cost Power System Stability Symmetrical Components and Symmetrical and Unsymmetrical Faults Circuit Breaker Switch Gear and Protection Per Unit System Load Flow Studies High Voltage Dc Transmission Generating Power Station

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Error Analysis and Measurement Basic of Indicating Instruments Potentiometer and Instrument Transformers Measurement of Resistance and A.C Bridges Measurement of Energy and Power Digital Voltmeters Questions Cathode Ray Oscilloscope

Analog Electronics

Diode Circuits and Applications Bjt and Mosfet Biasing Small Signal Modeling Feedback Amplifiers and Oscillator Circuits Operational Amplifier Frequency Response 555 Timer

Control Systems

Block Diagram and Signal Flow Graph Polar Nyquist and Bode Plot State Variable Analysis Basics of Control System Routh Hurwitz Stability Time Response Analysis Root Locus Techniques Controller and Compensator

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Choppers and Commutation Techniques Ac Voltage Controllers Single and Three Phase Rectifier Power Semiconductor Devices Inverters

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