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1
GATE EE 1998
MCQ (Single Correct Answer)
+1
-0.3
In a commutation circuit employed to turn off an $$SCR$$, Satisfactory turn-off is obtained when.
A
Circuit turn-off time
< device turn-off time
B
Circuit turn-off time
> device turn-off time
C
Circuit time constant
> device turn-off time
D
Circuit time constant
< device turn-off time
2
GATE EE 1997
MCQ (Single Correct Answer)
+1
-0.3
If a diode is connected in anti - parallel with a thyristor, then
A
Both turn off power loss and turn off time decreases
B
Turn-off power loss decreases but turn - off -time increases
C
Turn-off power loss increases, but turn off time decreases
D
None of the above
3
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
Which semiconductor power device out of the following is not a current triggered device?
A
Thyristor
B
$$G.T.O$$
C
Triac
D
$$MOSFET$$
4
GATE EE 1996
MCQ (Single Correct Answer)
+1
-0.3
The Triac can be used only in
A
Inverter
B
Rectifier
C
Multiquadrant chopper
D
Cycloconverter
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GATE EE Subjects
Electric Circuits
Three Phase Circuits Transient Response Graph Theory Two Port Networks Sinusoidal Steady State Analysis Network Elements Network Theorems
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
Electrical Machines
Induction Machines D.C Machines Synchronous Machines Transformers
Engineering Mathematics
Calculus Vector Calculus Linear Algebra Differential Equations Probability and Statistics Transform Theory Complex Variable Numerical Methods
General Aptitude
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
Electrical and Electronics Measurement
Basic of Indicating Instruments Error Analysis and Measurement Measurement of Resistance and A.C Bridges Measurement of Energy and Power Digital Voltmeters Questions Potentiometer and Instrument Transformers 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
Time Response Analysis Block Diagram and Signal Flow Graph Polar Nyquist and Bode Plot State Variable Analysis Root Locus Techniques Basics of Control System Routh Hurwitz Stability Controller and Compensator
Power Electronics
Choppers and Commutation Techniques Single and Three Phase Rectifier Power Semiconductor Devices Ac Voltage Controllers Inverters
Digital Electronics
Sequential Circuits Microprocessor Boolean Algebra Analog to Digital and Digital to Analog Converter Combinational Circuits Minimization Logic Families and Memories Logic Gates
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