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1
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
The figure shows the voltage across a power semiconductor device and the current through the device during a switching transition. Is the transition a turn ON transition or a turn OFF transition? What is the energy lost during the transition? GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 10 English
A
Turn ON, $${{V{\rm I}} \over {2\left( {{t_1} + {t_2}} \right)}}$$
B
Turn OFF, $$V{\rm I}\left( {{t_1} + {t_2}} \right)$$
C
Turn ON, $$V{\rm I}\left( {{t_1} + {t_2}} \right)$$
D
Turn OFF, $${{V{\rm I}} \over {2\left( {{t_1} + {t_2}} \right)}}$$
2
GATE EE 2005
MCQ (Single Correct Answer)
+2
-0.6
An electronic switch $$S$$ is required to block voltages of either polarity during its OFF state as shown in figure (a). This switch is required to conduct in only one direction during its ON state as shown in the figure (b). GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 9 English 1

Which of the following are valid realizations of the switch $$s$$?

GATE EE 2005 Power Electronics - Power Semiconductor Devices Question 9 English 2
A
Only $$1$$
B
$$1$$ and $$2$$
C
$$1$$ and $$3$$
D
$$3$$ and $$4$$
3
GATE EE 2004
MCQ (Single Correct Answer)
+2
-0.6
A $$MOSFET$$ rated for $$15 A,$$ carries a periodic current as shown in figure. The ON state resistance of the MOSFET is $$0.15$$ $$\Omega .$$ The average ON state loss in the $$MOSFET$$ is GATE EE 2004 Power Electronics - Power Semiconductor Devices Question 11 English
A
$$33.8$$ $$W$$
B
$$15.0$$ $$W$$
C
$$7.5$$ $$W$$
D
$$3.8$$ $$W$$
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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
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
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Verbal Ability 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
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 Frequency Response Bjt and Mosfet Biasing 555 Timer Feedback Amplifiers and Oscillator Circuits Operational Amplifier Small Signal Modeling
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
Power Electronics
Choppers and Commutation Techniques Single and Three Phase Rectifier Power Semiconductor Devices Ac Voltage Controllers 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
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