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1
GATE EE 1994
MCQ (Single Correct Answer)
+1
-0.3
A switched mode power supply operating at $$20$$ $$kHz$$ to $$100$$ $$kHz$$ range uses as the main switching element
A
Thysistor
B
$$MOSFET$$
C
Triac
D
$$UJT$$
2
GATE EE 1994
Fill in the Blanks
+1
-0
A triac can be triggered by a gate pulse of __________ polarity
3
GATE EE 1993
MCQ (Single Correct Answer)
+1
-0.3
The thermal resistance between the body of a power semiconductor device and the ambient is expressed as
A
Voltage across the device divided by current through the device
B
Average power dissipated in the device divided by the square of the $$RMS$$ current in the device
C
Average power dissipted in the device divided by the temperature difference from body to ambient
D
Temperature difference from body to ambient divided by average power dissipated in the divice
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Digital Electronics
Analog to Digital and Digital to Analog Converter Microprocessor Sequential Circuits Logic Gates Minimization Logic Families and Memories Boolean Algebra Combinational Circuits
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Controller and Compensator Root Locus Techniques Polar Nyquist and Bode Plot State Variable Analysis Basics of Control System Time Response Analysis Routh Hurwitz Stability Block Diagram and Signal Flow Graph
Power System Analysis
Circuit Breaker Parameters and Performance of Transmission Lines Switch Gear and Protection High Voltage Dc Transmission Symmetrical Components and Symmetrical and Unsymmetrical Faults Load Flow Studies Per Unit System Power Generation Cost Power System Stability Generating Power Station
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Diode Circuits and Applications Feedback Amplifiers and Oscillator Circuits Frequency Response Bjt and Mosfet Biasing Small Signal Modeling 555 Timer Operational Amplifier
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Network Elements Transient Response Two Port Networks Sinusoidal Steady State Analysis Network Theorems Three Phase Circuits Graph Theory
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Continuous Time Periodic Signal Fourier Series Sampling Theorem Miscellaneous Continuous Time Signal Fourier Transform Linear Time Invariant Systems Continuous and Discrete Time Signals Discrete Time Signal Z Transformation Continuous Time Signal Laplace Transform
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Linear Algebra Differential Equations Probability and Statistics Complex Variable Transform Theory Numerical Methods Calculus Vector Calculus
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