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1
GATE EE 2008
MCQ (Single Correct Answer)
+2
-0.6
In the circuit shown in the figure, the switch is operated at a duty cycle of $$0.5.$$ A large capacitor current is connected across the load. The inductor current is assumed to be continuous. GATE EE 2008 Power Electronics - Choppers and Commutation Techniques Question 6 English

The average voltage across the load and the average current through the diode will respectively be

A
$$10$$ $$V,$$ $$2A$$
B
$$10$$ $$V,$$ $$8A$$
C
$$40$$ $$V,$$ $$2A$$
D
$$40$$ $$V,$$ $$8A$$
2
GATE EE 2007
MCQ (Single Correct Answer)
+2
-0.6
The circuit in the figure is current commutated $$dc$$ $$-$$ $$dc$$ chopper where, $$T{h_M}$$ is the main $$SCR$$ and $$T{h_AUX}$$ is the auxiliary $$SCR$$. The load current is constant at $$10$$ $$A.$$
$$T{h_M}$$ is $$ON$$
$$T{h_AUX}$$ is trigged at $$t=0.$$ $$T{h_M}$$ is turned $$OFF$$ between. GATE EE 2007 Power Electronics - Choppers and Commutation Techniques Question 7 English
A
$$0{\mkern 1mu} {\mkern 1mu} \mu s < t \le 25{\mkern 1mu} {\mkern 1mu} \mu s$$
B
$$25{\mkern 1mu} {\mkern 1mu} \mu s < t \le 50{\mkern 1mu} {\mkern 1mu} \mu s$$
C
$$50{\mkern 1mu} {\mkern 1mu} \mu s < t \le 75{\mkern 1mu} {\mkern 1mu} \mu s$$
D
$$75{\mkern 1mu} {\mkern 1mu} \mu s < t \le 100{\mkern 1mu} {\mkern 1mu} \mu s$$
3
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A voltage commutated chopper operating at $$1$$ $$kHz$$ is used to control the speed of $$dc$$ motor as shown in figure. The load current is assumed to be constant at $$10$$ $$A.$$ GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 8 English

The average output voltage of the chopper will be

A
$$70$$ $$V$$
B
$$47.5$$
C
$$35$$ $$V$$
D
$$0$$
4
GATE EE 2006
MCQ (Single Correct Answer)
+2
-0.6
A voltage commutated chopper operating at $$1$$ $$kHz$$ is used to control the speed of $$dc$$ motor as shown in figure. The load current is assumed to be constant at $$10$$ $$A.$$ GATE EE 2006 Power Electronics - Choppers and Commutation Techniques Question 9 English

The minimum time in $$\mu $$ sec for which the $$SCR$$ $$M$$ should be ON is

A
$$280$$
B
$$140$$
C
$$70$$
D
$$0$$
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GATE EE Subjects
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
Engineering Mathematics
Linear Algebra Differential Equations Calculus Probability and Statistics Numerical Methods Vector Calculus Transform Theory Complex Variable
General Aptitude
Verbal Ability Numerical Ability
Power Electronics
Choppers and Commutation Techniques Ac Voltage Controllers Single and Three Phase Rectifier Power Semiconductor Devices Inverters
Power System Analysis
Per Unit System Power Generation Cost Power System Stability Symmetrical Components and Symmetrical and Unsymmetrical Faults Circuit Breaker Switch Gear and Protection Load Flow Studies High Voltage Dc Transmission Generating Power Station Parameters and Performance of Transmission Lines
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
Digital Electronics
Boolean Algebra Logic Gates Combinational Circuits Minimization Logic Families and Memories Sequential Circuits Analog to Digital and Digital to Analog Converter Microprocessor
Electrical Machines
Induction Machines D.C Machines Synchronous Machines Transformers
Electric Circuits
Network Elements Network Theorems Three Phase Circuits Transient Response Sinusoidal Steady State Analysis Graph Theory Two Port Networks
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
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