BEU question paper solution. Here we have provide Bihar Engineering university previous year question paper solution. BEU electrical engineering question paper 6 semester solution. These solution are well organized by our expert you can go through it to excel in your examination.
Electrical Drive 2023, 2022 question paper solution. previous years questions is highly beneficial for students to understand the pattern of questions which are asked in exams.
Q.1 Write the short answer of the following (Any seven question only):
(a) What is an electrical drive?
(b) List out the drawback of rectifier fed DC drives.
(c) What is steady state stability for an electric drive?
(d) What is regenerative braking?
(e) Write the speed control methods of DC drives.
(f) What is Slip recovery scheme in induction motor?
(g) Define PWM.
(h) Write the Starting torque equation of three phase induction motor. What is the most economical method of electric braking?
(i) (j) Why the thyristor control is preferred over Ward Leonard system of speed control?
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0.2 А 220 V, 800 rpm, 60A DC separately excited motor has an armature resistance of 0.09 2. It is broken by plugging from an initial speed of 1500 rpm. Calculate (i) Resistance to be placed in armature circuit to limit braking current to twice the full load value (ii) Braking torque (iii) Torque when the speed has fallen to zero.
Q.3 (a) Explain reverse voltage braking of a three phase induction motor drive; also give the speed-torque curve for it. What are the motor is (b) f DC drives due to which the three phase induction
0.4 What is slip power Recovery scheme? Explain the operation with suitable diagram and derive the expression of motor torque.
Q.5 (a) With schematics explain different types sof self excited generators. (b) What are the modes of operation in electric drive system?
Q.6 (a) Explain three phase controlled converters with neat sketch? (b) Explain briefly about flux weakening operation of induction motor drives?
Q.7 What do you understand by constant torque drive and constant power drive? Explain the various methods of braking of induction motors. HIGH 6
Q.8 Draw the block diagram of an electric drive. Explain the function of power modulator in detail.
Q.9 Write Short notes on any two of the following: Loss calculation in de motor (c) Torque-speed curve of pump load (b) Operating regions of de machine
BEU PYQ SOLUTION ELECTRIC DRIVE 2023 = DOWNLOAD(technical prakashan)
download(formulator solution)
BEU PYQ SOLUTION ELECTIC DRIVE 2022 = DOWNLOAD
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