GATE EE 1998 | Power Semiconductor Devices Question 26 | Power Electronics

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GATE EE 1998

MCQ (Single Correct Answer)

-0.3

The $$MOSFET$$ switch in its on - state may be considered equivalent to

Resistor

Inductor

Capacitor

Battery

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

The uncontrolled electronic switch employed in power electronic converters is

thyristor

bipolar junction transistor

Diode

MOSFET

GATE EE 1998

MCQ (Single Correct Answer)

-0.3

In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.

Circuit turn-off time
< device turn-off time

Circuit turn-off time
> device turn-off time

Circuit time constant
> device turn-off time

Circuit time constant
< device turn-off time

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

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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

Signals and Systems

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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Engineering Mathematics

Linear Algebra Differential Equations Calculus Probability and Statistics Numerical Methods Vector Calculus Transform Theory Complex Variable

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Verbal Ability Logical Reasoning Numerical Ability

Power System Analysis

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

Digital Electronics

Boolean Algebra Logic Gates Combinational Circuits Minimization Logic Families and Memories Sequential Circuits Analog to Digital and Digital to Analog Converter Microprocessor