1
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.
A
Low voltage at rated frequency
B
Low voltage keeping the $$V/f$$ ratio constant
C
Rated voltage at low frequency
D
Rated voltage at rated frequency
2
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
Your input ____
3
GATE EE 1994
True or False
+1
-0
A line - commutated inverter changes $$dc$$ voltage to $$ac$$ voltage
A
TRUE
B
FALSE
4
GATE EE 1993
MCQ (Single Correct Answer)
+1
-0.3
When a line commutated converter operates in the inverter mode
A
It draws both real and reactive power from the A.C supply
B
It delivers both real and reactive power to the $$A.C$$ supply
C
It delivers real power to the A.C supply
D
It draws reactive power from the $$A.C$$ supply
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