Mechatronics

Student ID

Section A
(10 Marks)
Q1
a)
The
hexadecimal
equivalent
for
0100-1010-0011-1100
is………………………………………………………
b) Rotary Potentiometer is a sensor which can be used to measure..
…………………………………………
c) In a microprocessor, ALU stands for ……………………………………………..
……………………………………….
d) The linear actuator used in pneumatic/hydraulic systems which can be
actuated in both
directions is called ……………………………………………………………
e)The symbol shown below is for a ………….. position ………. way directional
control valve.

Q2 The following table shows the interrupts used in a 8085 microprocessor.
Redraw the table in your answer sheet and fill in the blanks with (YES/NO).
Interrupt
MASKED
VECTORE
name
D
a) INTR
b) RST 7.5
c) RST 6.5
d) RST 5.5
e) TRAP

Section B

(20 Marks)

Q 3 What is the need for protection circuits in a measurement system? Explain how can
we protect a system against
i) High Current
ii) High Voltage
Q 4 What do you understand by a control system? With the help of a suitable example
differentiate between open and closed loop control system.

Section C

(40 Marks)

Student ID
Q5 With the help of suitable diagrams explain the difference between the working of an
incremental encoder and an absolute encoder.
Q6 Draw the circuit diagrams and explain the different operational amplifiers which are
used in mechatronics system.
Q7 Briefly explain the different sensors that are employed for measurement of
i)
Displacement.
ii)
Temperature
iii)
Liquid Flow

Q8 Explain the various types of memory units that can be interfaced with a
microprocessor?

Q9 What do you understand by Real-time Data Acquisition and Control in a Mechatronics system?
What are its need and benefits?

Section D
(30 Marks)
Q10 Draw the block diagram showing the internal architecture of a 8085 microprocessor
and briefly explain the different elements which constitute it.
Q11 What is ladder programming in a PLC? With neat illustrations explain how you will
obtain the following logic functions by using combinations of switches and also draw
their corresponding ladder programs?
i)
ii)

iii)
iv)
v)

AND.
OR
NOR
NAND
XOR