Inverters Voltage Control MCQs : This section focuses on the "Inverters Voltage Control". These Multiple Choice Questions (MCQs) should be practiced to improve the Inverters Voltage Control skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
__________ method is an internal method for controlling the inverter output voltage.
A. series connection of inverters
B. chopper method
C. commutating capacitor
D. pulse width modulation
Question 2
External control of dc input voltage can be obtained by the use of a
A. transformer
B. chopper
C. inverter
D. converter
Question 3
In case of the series inverter control, if two inverters are connected in series through a transformer, and two secondary voltages are V1 and V2, then the resultant output is given by
A. V1 + V2
B. √(V12 + V22)
C. [V12 + V22 + 2.V1.V2.cosθ]1/2
D. [V12 + V22 + 2.V1.V2.sinθ]1/2
Question 4
In pulse width modulation
A. the output voltage is modulated
B. the input voltage is modulated
C. the gating pulses are modulated
D. none of the mentioned
Question 5
In the external control of dc input voltage
A. a chopper is placed just after the inverter block
B. a chopper is placed just after the filter block
C. a chopper is placed before the filter and the inverter block
D. none of the mentioned
Question 6
In the PWM method
A. external commutating capacitors are required
B. more average output voltage can be obtained
C. lower order harmonics are minimized
D. higher order harmonics are minimized
Question 7
In the series-inverter control method
A. two inverters are connected back-to-back
B. the output from the inverter is taken serially
C. output voltages of two inverters are summed up with the help of a transformer
D. output voltages of two inverters are summed up with the help of a third inverter
Question 8
The external control of ac output voltage can be achieved in an inverter by
A. connecting a cyclo-converter
B. connecting an ac voltage controller between the output of the inverter and the load
C. connecting an ac voltage controller between the dc source and inverter
D. connecting an ac voltage controller between the load and the dc source
Question 9
The series-inverter control method is a/an
A. internal voltage control method
B. external frequency control method
C. external voltage control method
D. none of the mentioned
Question 10
Which of the following is not a PWM technique?
A. Single-pulse width modulation
B. Multiple-pulse width modulation
C. Triangular-pulse width modulation
D. Sinusoidal-pulse width modulation