Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 7th Semester (Seventh Semester) 2015-2016 EEN 701EEE 504 Electrical Instrumentation Process Control Question Paper
(Following Paper ID and Roll No. to be filled in your '
Answer Book)
Paper ID :i2i7MIIZISZJ'
B.Tech.
(SEM. VII) THEORY EXAMINATION, 2015-16
ELECTRICAL INSTRUMENTATION & PROCESS
CONTROL
[Time:3 hours] [Total Marks:100]
Section-A
1. Attempt all parts. All parts carry equal marks. Write
answer of each part in short. (10><2=20)
(a) Differentiate between primary and secondary
transducers with example.
(b) A thermistor has a characterstic temperature ,8 of
3000 K. If its resistance is 100kQ, what will be
its resistance at 600 K.
(c) Why platinum is preferred over gold to construct
RID?
(d) De?ne working principle of Hall E?ect transducer.
(6) Discuss criterion for the selection of transmission
channel in a telemetry system.
7200 (1) P.T.O.
Attempt any ?ve question from this section.
2.
7200
(f) What is neutral zone in a ON/OFF controller.
(g) What is the need of data transmission and
telemetry. -
(h) Describe the working principle of LCD.
(i) Discuss advantages of digital oscilloscope over
analog oscilloscope.
(j) What are the elements of process control.
Section-B'
(5 X 1 0:50)
What are different types of mechanical pressure sensing
elements? Explain the measurement of pressure using
capacitive transducer with the help of neat diagram.
What is strain gauge transducer? Give its applications.
A strain gauge is bonded to a beam 0.1m long and has a
cross sectional area 4cm2. Young?s modulus l?or steel is
207 GN/mz. The strain gauge has an unstrained resistance
of 240 Q and a gauge factor of 2.2. When a load is applied,
the resistance of gauge changes by 0.013 (2 . Calculate the
changes in length of the steel beam and the amount of
force applied to the beam.
Explain why it is essential to use radio frequency
telemetry? Compare the salient features of PAM and
PCM telemetry techniques.
(2) EEN-701/EEE-504
7200
Describe the basic components of a magnetic tape
recorder and explain direct recording technique of tape
recording.
What is three term control action? What are the changes
in the overall system dynamics when a derivatiVe action
is plugged in? What are the tunable parameters of a PID
controller. '
What is a proportional controller? Discuss its
characterstics and advantages. '
A proportional controller is used to control temperature
within 50"C to 130?C. A set point is 73.5 ?C. The set
peint is maintained with 50% as output of controller.
Find the proportional offset which requires 55% of
controller output when proportional gain
is:(i)0.l(ii)10.0. ?
What are the advantages of Digital data acquisition
system over Analog data acquisition system. Explain in
brief the building blocks of Modern digital data
acquisition system.
Write short notes on following:
(i) Photoconductive Cell.
(ii) Total Radiation Pyrometer.
(3) P.T.O.
Section-C
Attempt any two questions from this section. (15x2=30)
10.
Explain the construction of resistance potentiometer
used for the measurement of linear displacement. Derive
the expression for output voltage.
A linear resistance potentiometer is 50mm long and is
uniformly wound with a wire having a resistance of
10,000 ohms. Under normal conditions, the slider is at
' the centre ,of the potentiometer. Find the linear
11.
12.
7200
displacement when the resisstance of the potentiometer
as measured by a Wheatstone bridge for two cases is:
(i) 3850 ohms (ii}7560 ohms. Are the two displacements
in the same direction?
Write short note on following:
' (i) DSO
(ii) Smart scnors
(a) Describe the measurement of ?uid velocity using
ultrasonic ?ow meter. Derive the expression for
velocity of ?uidT '
(b) Explain different types of channels used for
telemetry mentioning advantages and disadvantages
of each. '
._x_
(4) EEN-701lEEE-504
This post was last modified on 29 January 2020