Download PTU. I.K. Gujral Punjab Technical University (IKGPTU) M.Tech. CAD-CAM 2nd Semester 23513 MECHATRONICS Question Paper.
Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(CAD/CAM) (Elective-II) (Sem.?2)
MECHATRONICS
Subject Code : ME-514
M.Code : 23513
Time : 3 Hrs. Max. Marks : 100
INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.
1. a) Discuss the use of strain gauges in load cells. What will be change in resistance of an
electrical resistance strain gauge with a gauge factor of 2.1 and resistance 50 ? if it is
subjected to a strain of 0.001?
b) Discuss the principle of Hall effect and its use in measurement systems.
2. Discuss the principle, construction, working and applications of linear variable
differential transformers.
3. a) Discuss relative advantages and limitations of hydraulic and pneumatic actuation
systems.
b) Make truth tables for AND, OR, NOR and NAND logic functions and state their
Boolean expressions. Also show that . ? ? ? A A B A B .
4. a) What are the main characteristics of op-amps? Draw the circuit diagram of an
inverted op-amp and derive the relation for voltage gain.
b) Draw the circuit of weighted-resistor type of DAC and derive the relation for
converting a 4-bit digital value into analog value.
5. a) What are stepper motors? Discuss the working of a permanent magnet stepper motor.
What digital input rate is required to produce a rotation of 600 RPM in a PM stepper
motor having step angle of 7.5??
b) Compare the features of fluid power actuators and electric actuators.
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1 | M- 23513 (S9)-1697
Roll No. Total No. of Pages : 02
Total No. of Questions : 08
M.Tech.(CAD/CAM) (Elective-II) (Sem.?2)
MECHATRONICS
Subject Code : ME-514
M.Code : 23513
Time : 3 Hrs. Max. Marks : 100
INSTRUCTION TO CANDIDATES :
1. Attempt any FIVE questions out of EIGHT questions.
2. Each question carries TWENTY marks.
1. a) Discuss the use of strain gauges in load cells. What will be change in resistance of an
electrical resistance strain gauge with a gauge factor of 2.1 and resistance 50 ? if it is
subjected to a strain of 0.001?
b) Discuss the principle of Hall effect and its use in measurement systems.
2. Discuss the principle, construction, working and applications of linear variable
differential transformers.
3. a) Discuss relative advantages and limitations of hydraulic and pneumatic actuation
systems.
b) Make truth tables for AND, OR, NOR and NAND logic functions and state their
Boolean expressions. Also show that . ? ? ? A A B A B .
4. a) What are the main characteristics of op-amps? Draw the circuit diagram of an
inverted op-amp and derive the relation for voltage gain.
b) Draw the circuit of weighted-resistor type of DAC and derive the relation for
converting a 4-bit digital value into analog value.
5. a) What are stepper motors? Discuss the working of a permanent magnet stepper motor.
What digital input rate is required to produce a rotation of 600 RPM in a PM stepper
motor having step angle of 7.5??
b) Compare the features of fluid power actuators and electric actuators.
2 | M- 23513 (S9)-1697
6. a) Discuss the features, construction and working of Induction and Synchronous AC
motors.
b) Draw the block diagram of 8085 8-bit microprocessor. Discuss the general-purpose
registers available in this microprocessor.
7. a) State the criteria used in selecting a PLC for a particular task or tasks. Draw ladder
diagram for implementing NAND, NOR and XOR logics in PLC.
b) What is the significance of mathematical modeling of dynamic systems? Derive the
mathematical model for displacement of a simple mass-damper-spring system excited
by an external force. What will be the steady state value of displacement of such a
system having stiffness of 2N/cm when subjected to constant force of 10N?
8. Write short notes on :
a) Pole placement technique
b) Brushless DC motors
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 13 December 2019