Download GTU BE/B.Tech 2019 Summer 8th Sem Old 181702 Motion Control Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Summer 8th Sem Old 181702 Motion Control Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ?VIII (OLD) EXAMINATION ? SUMMER 2019
Subject Code: 181702 Date: 09/05/2019

Subject Name: Motion Control

Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.

Q.1 (a) Briefly explain various selection criteria for the DC motors for incremental
motion Control application.
07
(b) Draw block diagram of Incremental Motion system also justify the need of
position sensors.
07

Q.2 (a) Explain what you mean by backlash and dead zone during transmission of
rotational motion in control application. How it can be limited and what are its
effect on the performance control application.
07
(b) Briefly explain and draw operation of linear variable reluctance step motor with
necessary diagram.
07
OR
(b) Explain the role of speedup capacitor in active suppression controller 07

Q.3 (a) Explain what are the effects of torsional resonance on performance of
incremental motion servos? Also explain its effect to improve the stability of
the system?
07
(b) Describe and explain bipolar PWM dc motor amplifiers. 07
OR
Q.3 (a) Explain the velocity control system with the voltage amplifier. 07
(b) Explain Resolvers and Magnetic pickups as Encoders. 07

Q.4 (a) Draw and explain Unidirectional and Bi directional logic sequencer for step
motor.
07
(b) Explain what are points are considered for power amplifier design
consideration? Explain it.
07

OR
Q.4 (a) Explain the need of suppression circuit in step motor drives. Enumerate various
scheme of it and explain in brief.
07
(b) Explain the Input and Output relationship in linear DC servo amplifier, with the
help of schematic and mathematical model
07

Q.5 (a) Explain the working of brushless DC motor with figure 07
(b) Briefly explain about microprocessor based stepper motor speed control. 07
OR

Q.5 (a) Obtain liberalized model for phase locked servo system and describe its
working.
07
(b) Explain effect of lead angle in closed loop control of step motor. 07

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