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WorksheetsINVERTER
Total questions: 16
Worksheet time: 8mins
What is the output of an inverter?
DC
AC
What are the good candidates for switches in dc to ac conversion techniques?
Diode
SCR
MOSFET
BJT
Why output of an inverter is not sinusoid?
Because the frequency not same
Voltage higher than input
Because rich of harmonics component
What are the techniques to control the output voltage?
PWM
buck converter
dc chopper
What analysis that can be used to represent the periodic waveform?
Trigonometry analysis
Fourier analysis
Laplace transform
Why we have to do the Fourier analysis?
To find total harmonic distortion
To find output current
To find rms output voltage
What is the fundamental value?
The sine wave that has same frequency value with the original value
The sine wave that has odd order frequency value with the original value
The sine wave that has even order frequency value with the original value
What is the rms output voltage for the dual supply single phase inverter with RL load
Vorms = Vs
Vorms = 2Vs
Vorms = Vs / 2
How many types of switching scheme in inverter?
1
2
3
4
What is the difference between square wave and quasi square wave waveform?
the firing angle
the extinction angle
What scheme is the best to decrease the THD of load current?
Square wave
Quasi square wave
Pulse width modulation
What are the two signals that is used in PWM?
A square signal and carrier signal
A reference signal and carier signal
A square signal and reference signal
There are 2 types of PWM scheme. List them.
Tripolar and unipolar
Bipolar and quadpolar
Unipolar and bipolar
For unipolar, the output waveform is from ....... to ........?
High to zero
High to low
What types of the PWM shown in figure?
Unipolar
Bipolar
What is this and list to store the power?
Inverter and battery
Uninterruptible supply (UPS) and batteries
Induction heating and inverter
