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WorksheetsResonant Converter
Total questions: 20
Worksheet time: 7mins
In a series of resonant circuit, with an increase in L
resonant frequency will decrease
bandwidth will decrease
Quality factor will increase
all of the above
The major advantage of ZCS and ZVS is
Switch turn on and off and zero voltage and zero current
High current stress on switch
Low current on switch
none of the mentioned
The soft switching helps in
Increasing switching frequency
Reducing switch stress
Decreasing EMI
All of these
The solid state relays have a
SCR
Coil and contact arrangement
Optocoupler
None of the above
A converter circuit which employs turn off and on when the voltage or current through the device is zero at an instant switching is called a _____.
conventional converter
resonant converter
zero switching converter
power converter
The difference between resonant commutation and self-commutation is
both of these methods are based on entirely different principles
in resonant commutation, the commutating elements carry load otherwise, it does not carry load current
in a resonant commutation uses L and C but self-commutation uses only a capacitor
none of the above
Induction heating is a ______ type of heating.
zero frequency
high frequency
low frequency
power frequency
In order to tune a parallel resonance circuit to a lower frequency, the capacitance must
be increased
be decreased
be zero
remain the same
A parallel resonant circuit can be employed
as a high impedance
to reject a small band of frequencies
to amplify certain frequencies
both A and B
In a series and parallel resonant circuit, increase in resistance would cause
increase in bandwidth for both circuits
decrease in bandwidth for both circuits
decrease in bandwidth for series circuit and increase for parallel circuit
increase in bandwidth for series circuit and decrease for parallel circuit
Resonant frequencies are basically used to
generate large peaky voltage
reduce the switching losses
eliminate harmonics
convert a square wave into sine wave
A high quality factor coil has
large bandwidth
high losses
low losses
flat response
In a series resonant inverter
the load current has a square waveform
trigger frequency is higher than damped resonant frequency
Change of frequency does not alter transferred power
output voltage depends upon damping factor of the load
An oscillator produces……………. oscillations
Damped
Undamped
Overdamped
Modulated
What is the output equation of a buck converter
D / Vin
Vin / (1-D)
Vin * D
Vin / D
The circuit above is not correctly wired please list the problems.
Fuse and switch are in parallel
Fuse and switch are in series
The volt meter is in parallel with the battery
The volt meter is in series with the battery
Which of the following is a resonant or tuned circuit?
An inductor and a capacitor in series or parallel
A linear voltage regulator
A resistor circuit used for reducing standing wave ratio
A circuit designed to provide high-fidelity audio
Colpitts oscillator is also known as
LC Oscillator
Resonant Circuit Oscillator
Tank circuit Oscillator
All of the above
Identify the given circuit.
Buck Boost Converter
Boost Converter
Buck Converter
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
Transformer
Rectifier
Amplifier
Reflector
