# PTU B.Tech Electrical Engineering 6th Semester May 2019 71154 INSTRUMENTATION IN POWER SYSTEM Question Papers

PTU Punjab Technical University B-Tech May 2019 Question Papers 6th Semester Electrical and Electronics Engineering (EEE)-EE-Electrical Engineering

Roll No.
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(EE/Electrical & Electronics) (2011 Onwards E-I)
(Sem.?6)
INSTRUMENTATION IN POWER SYSTEM
Subject Code : BTEE-605C
M.Code : 71154
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
have to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
have to attempt any T WO questions.

SECTION-A
1.

a. Define accuracy and precision.

b. What is linearity of a transducer?

c. What are the application of SCADA system?

d. What do you mean by the term 'shielding'?

e. What is the function of sample and hold circuit?

f. What are the properties of modulated signals?

g. What is meant by Total Harmonic distortion?

h. Differentiate between electrical and mechanical transducers.

i. What is the purpose of "multiplexer" in a telemetry system?

j. What are the components of SCADA?
1 | M - 7 1 1 5 4

( S 2 ) - 1 5 9 5

SECTION-B
2.
systems.
3.
What are the different types of telemetering system? Explain the land-line telemetering
4.
What is the role of instrumentation in hydro power plant? Explain detail with proper
diagram.
5.
What is a power factor? Explain the method of measurement of power factor. Also,
explain the active and reactive powers in a plant.
6.
Explain the circuit of multimeter for measurement of a.c. voltages.

SECTION-C
7.
Explain the working principle of single phase induction type energy meter. Also discuss
various methods of frequency and phase angle measurements with neat diagrams.
8.
Explain the working of capacitive type potential transformer with their transient
behaviour.
9.
Explain the effect of following on Current transformers

a Change of primary winding current

b. Change of secondary circuit burden

c. Change of frequency

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