31. |
In square wave operation mode of 3 phase VSI, the VSI
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Answer:
Option (c) |
32. |
In a 3 phase VSI SPWM to use a single carrier signal and preserve the features of PWM technique, the normalized carrier frequency should be
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Answer:
Option (b) |
33. |
In a 3 phase VSI out of eight valid states, the number of valid states that produce zero ac line voltages is/are
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Answer:
Option (b) |
34. |
In a three phase voltage source inverters
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Answer:
Option (d) |
35. |
The carrier which are commonly used in constant - frequency PWM is
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Answer:
Option (d) |
36. |
Out of the following which harmonic is the major contributor of the torque pulsation?
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Answer:
Option (a) |
37. |
The presence of harmonics
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Answer:
Option (d) |
38. |
Effect of higher order harmonics to 3-Φ I.M. is high than the lower order harmonic.
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Answer:
Option (b) |
39. |
Out of the following which harmonic does not produce any rotating field?
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Answer:
Option (c) |
40. |
Out of the following which harmonic is positive sequence hamonic?
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Answer:
Option (a) |