Electric Drives Brushless Dc Motors Online Exam Quiz
Electric Drives Brushless Dc Motors GK Quiz. Question and Answers related to Electric Drives Brushless Dc Motors. MCQ (Multiple Choice Questions with answers about Electric Drives Brushless Dc Motors
Calculate the compensator rating required for cos(?)=.1.
Options
A : 0.91 P.U
B : 0.99 P.U
C : 0.97 P.U
D : 0.92 P.U
Calculate the value of Crest factor if Vpeak=141 V and Vr.m.s=100 V for sinusoidal voltage.
Options
A : 1.41
B : 2.38
C : 4.42
D : 5.58
Calculate the average inductor current of the Boost converter if the load current is 7 A and duty cycle value is .8.
Options
A : 36 A
B : 35 A
C : 34 A
D : 31 A
Calculate the electrical angle for 6 pole machine. (?m represents mechanical angle)
Options
A : 4×?m
B : 5×?m
C : 2×?m
D : 3×?m
Calculate the output power of the Buck converter if the supply voltage is 4 V and duty cycle value is .1 for 4 ? load.
Options
A : 40 mW
B : 20 mW
C : 50 mW
D : 60 mW
Calculate peak-peak voltage if Vmax=45 V and Vmin=45 V.
Options
A : 60 V
B : 30 V
C : 50 V
D : 0 V
Calculate the output voltage of the Buck-Boost converter if the supply voltage is 14 V and duty cycle value is .85.
Options
A : 79.3 V
B : 45.5 V
C : 86.5 V
D : 54.7 V
The speed of a BLDC motor can be controlled by __________
Options
A : Changing input DC voltage
B : Changing temperature
C : Changing wind direction
D : Cannot be controlled
In the biomedical instruments like artificial heart pumps, the motor used is ____________
Options
A : DC shunt motor
B : DC series motor
C : Induction motor
D : BLDC motor
Due to low inertia, BLDC motors have __________
Options
A : Faster acceleration
B : Slower acceleration
C : High-cost
D : Low cost
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