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In a flyback converter, the inductor of the buck-boost converter has beenreplaced by aIn a flyback converter, the inductor of the buck-boost converter has beenreplaced by a
The answer is:
C. Flyback transformer
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For bidirectional operation of convertersFor bidirectional operation of converters
The answer is:
A. A parallel combination of controllable switch and a diode is used
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For a buck converter to reduce the conduction losses in diodeFor a buck converter to reduce the conduction losses in diode
The answer is:
B. A low on - resistance switch can be added in parallel
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A step - down choppers can be used inA step - down choppers can be used in
The answer is:
D. All of these
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In a flyback converter, the inductor of the buck-boost converter has beenreplaced by aIn a flyback converter, the inductor of the buck-boost converter has beenreplaced by a
The answer is:
C. Flyback transformer
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For bidirectional operation of convertersFor bidirectional operation of converters
The answer is:
A. A parallel combination of controllable switch and a diode is used
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For a buck converter to reduce the conduction losses in diodeFor a buck converter to reduce the conduction losses in diode
The answer is:
B. A low on - resistance switch can be added in parallel
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A step - down choppers can be used inA step - down choppers can be used in
The answer is:
D. All of these
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The output current in PWM DC - DC converters is equal toThe output current in PWM DC - DC converters is equal to
The answer is:
C. Either (a) or (b)
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Advantages of Cuk converter is / areAdvantages of Cuk converter is / are
The answer is:
D. None of these
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In a push - pull converter, the filter capacitor can be obtained asIn a push - pull converter, the filter capacitor can be obtained as
The answer is:
C. Cmin= ( 1 – 2 D ) V / 32 ( Vr L f2 )
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The control method used for PWM dc - dc converter isThe control method used for PWM dc - dc converter is
The answer is:
D. All of these
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The control method used for PWM dc - dc converter isThe control method used for PWM dc - dc converter is
The answer is:
B. Current mode control
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In current commutated DC-DC choppers, the voltage spike appears acrossthe load whenIn current commutated DC-DC choppers, the voltage spike appears acrossthe load when
The answer is:
C. Both (a) and (b)
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In a load commutated DC - DC chopper, the capacitor has aIn a load commutated DC - DC chopper, the capacitor has a
The answer is:
C. Symmetric trapezoidal voltage across itself
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Voltage commutation circuit can be converted into a current commutationby interchanging the positions ofVoltage commutation circuit can be converted into a current commutationby interchanging the positions of
The answer is:
A. Diode and capacitor
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During the commutation period in 3 phase converter, overlap time isDuring the commutation period in 3 phase converter, overlap time is
The answer is:
C. Dependent on both the load current and load voltage behind the short circuit current
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In a three phase converter, the number of notches per cycle isIn a three phase converter, the number of notches per cycle is
The answer is:
C. Six
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Unipolar modulation is generally used inUnipolar modulation is generally used in
The answer is:
D. DC - DC converters
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Very large values of modulation index (greater than 3.24) lead toVery large values of modulation index (greater than 3.24) lead to
The answer is:
A. Square AC output voltage
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total MCQs: 282
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