Download PTU (I.K.Gujral Punjab Technical University (IKGPTU)) B-Tech (Bachelor of Technology) (EEE)- Electrical And Electronics Engineering 2020 December 2nd Sem 71536 Electrical Measurement And Instruments Previous Question Paper
Roll No.
Total No. of Pages : 02
Total No. of Questions : 18
B.Tech. (EE) PT (Sem.?2)
ELECTRICAL MEASUREMENT & INSTRUMENTS
Subject Code : BTEE-303
M.Code : 71536
Time : 3 Hrs. Max. Marks : 60
INST RUCT IONS T O CAND IDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION - B & C . have FOUR ques tions each.
3 .
Attempt any FIVE questions from SECT ION B & C carrying EIGHT marks eac h.
4 .
Select atleast T WO que stions from SECT ION - B & C.
SECTION-A
Answer briefly :
Q1
State the advantages of Dynamometer type instruments.
Q2
List the advantages and applications of ac potentiometers.
Q3
Write down the sources of EM waves, which can cause interference?
Q4
State the method of reducing ground loop interference.
Q5
What is the working principle of wattmeter employed in measuring equipment?
Q6
What are the practical difficulties in AC potentiometer?
Q7
List the disadvantages of Hay's bridge.
Q8
Principle of operation of a current transformer.
Q9
How the range of instrument can be extended in PMMC instruments?
Q10
What are parasitic voltages and how they are eliminated?
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SECTION-B
Q11
Derive the bridge balance condition for the Maxwell bridge and Schering bridge.
Q12
Describe with help of suitable diagrams basic and modern form of DC potentiometer.
Q13
Explain the working of a digital multimeter with a schematic block diagram.
Q14
Explain the function of 3 phase energy meter and wattmeter.
SECTION-C
Q15
Discuss the advantages and limitations of electromagnetic interference in measurements.
Q16
Describe the construction and functioning of current transformer. Also discuss its testing
and characteristics.
Q17
a) Describe the construction and working of PMMC instrument. Derive the equation for
deflection if the instrument is spring controlled.
b) What is the use of self balancing potentiometer in the field of electrical measurement?
Q18
Write short notes on following :
a) Flux Meter
b) Wein Bridge
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 February 2021