1
GATE EE 1995
Numerical
+1
-0
Consider the chopper circuit of figure. The chopper operates at $$400$$ $$Hz$$ and $$50$$% duty cycle. The load current remains almost ripple free at $$10A.$$ Assuming the input voltage to be $$200V$$ and the devices to be ideal, the turn-off time available to the thyristor $$Th$$ $$M$$ is____________ $$\mu s$$
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2
GATE EE 1995
MCQ (Single Correct Answer)
+1
-0.3
A $$dc$$ to $$dc$$ transistor chopper supplied from a fixed voltage $$dc$$ source feeds a fixed resistive-inductive load and a free-wheeling diode. The chopper operates at $$1$$ $$kHz$$ and $$50$$% duty cycle. Without changing the value of the average $$dc$$ current through the load, if it is desired to reduce the ripple content of load current, the control action needed will be
3
GATE EE 1995
MCQ (Single Correct Answer)
+1
-0.3
An inverter capable of supplying a balanced three - phase variable voltage variable frequency output is feeding a three - phase induction motor rated for $$50$$ $$Hz$$ and $$440V.$$ The stator winding resistances of the motor are negligible small. During starting, the current inrush can be avoided without sacrificing the starting torque by suitably applying.
4
GATE EE 1995
Numerical
+1
-0
A single phase Inverter with square wave output voltage will have in its output waveform a fifth harmonic component equal to ______ percentage of the fundamental
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Paper analysis
Total Questions
Analog Electronics
1
Control Systems
6
Digital Electronics
2
Electric Circuits
2
Electrical and Electronics Measurement
6
Electrical Machines
6
Electromagnetic Fields
1
Engineering Mathematics
7
Power Electronics
8
Power System Analysis
10
Signals and Systems
3
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