WorksheetsPower Electronics - 8
Total questions: 12
Worksheet time: 6mins
The transfer function approach is applicable to:
Only linear-time invariant systems
Linear-time invariant as well as time-varying system
Linear as well as non-linear system
All system
Which component is commonly used for isolation in gate drivers?
Optocoupler
Transformer
Inductor
Resistor
What purpose does the DC link capacitor in a UPQC serve?
To store energy for reactive power compensation
To filter out harmonics
To stabilise the voltage between the series and shunt inverters
To improve efficiency
Voltage swell is defined as:
A temporary drop in voltage
A temporary rise in voltage
A permanent drop in voltage
A permanent rise in voltage
The eigenvalues of the matrix A in the state-space representation correspond to:
The system's zeros
The system's poles
The system's inputs
The system's outputs
In Sliding Mode Control, chattering refers to:
Smooth control action
High-frequency oscillations due to rapid switching
A phase shift in the control signal
A delay in the system response
Which of the following is true about Sliding Mode Control?
It is less effective in the presence of model uncertainties.
It can handle non-linearities and uncertainties effectively.
It is only applicable to discrete-time systems.
It is based on a fixed control law without switching.
Active filters for power quality improvement can be configured to:
Only filter harmonics at a fixed frequency
Adapt to varying levels of harmonics in real-time
Work without any feedback mechanism
Reduce power factor to zero
Which of the following components are NOT typically part of a passive filter for power quality?
Resistor
Inductor
Capacitor
Operational Amplifier
Which of the following is an advantage of using active filters over passive filters for power quality?
Simplicity of design
Ability to compensate for both current and voltage harmonics
No need for an external power supply
Low initial cost
Main application of a cycloconverter circuit is found in
speed control of synchronous motors
speed control of dc motors
lift and hoists
tractions
Which of the following Indirect Matrix Converter (IMC) only allows unidirectional power
flow
Sparse Matrix Converter (SMC)
Very Sparse Matrix Converter (VSMC)
Ultra Sparse Matrix Converter (USMC)
All of the above
