A. Square
B. Sinusoidal
C. Triangular
D. Saw – tooth
Related Mcqs:
- 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____________?
A. Multiple of two
B. Odd multiple of three
C. Odd multiple of five
D. Odd multiple of seven - Any electrical signal present in a circuit other than the desired signal is known as______________?
A. Noise
B. Distortion
C. Interference
D. All of these - For similar carrier and modulating signals, the line current used in CSI is__________?
A. Identical to line voltage in a VSI
B. Identical to line current in VSI
C. Identical to phase voltage in VSI
D. Identical to phase voltage in CSI - In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?
A. Top switch of each leg is on at any instant
B. Bottom switch of each leg is on at any instant
C. Either A. or B.
D. None of these - For similar carrier and modulating signals, the line current used in CSI is_____________?
A. Identical to line voltage in a VSI
B. Identical to line current in VSI
C. Identical to phase voltage in VSI
D. Identical to phase voltage in CSI - In EMC signal, the source delivers maximum power to the input of transmission line when the transmission line input impedance
A. Is equal to the source resistance
B. Greater than the source resistance
C. Smaller than the source resistance
D. None of these - The phase angle of gate signal in TRIAC can be shifted by using_____________?
A. A capacitor
B. A variable resistor
C. An inductor
D. Only (a) and (b) - An ideal switch is___________?
A. Lossless
B. Carry current in any direction when it is on
C. Does not carry any current in any direction when it is off
D. All of these - The input current waveform of a bridge controlled rectifier when the load is perfectly filtered is___________?
A. Sine wave
B. Square wave
C. Saw – tooth wave
D. Trapezoidal wave - An ideal diode is___________?
A. Unidirectional
B. Bidirectional
C. Fixed voltage polarity
D. Only (a) and (c)
