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EndsemNov 20252019 patternSE Electrical

Electrical Measurements & Instrumentation (EMI) SPPU Endsem Question Paper Nov 2025

All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.

Open the PDFMost repeated EMI questions
Subject code
203144
Pattern
2019 pattern
Exam
Endsem
Session
Nov 2025
Max. marks
70
Time
2½ Hours
Semester
III
Paper code
[6582]-19

Printed for: S.E. (Electrical Engineering)

Instructions to the candidates

  1. Attempt Q.1 or Q.2, Q.3 or Q.4, Q.5 or Q.6, Q.7 or Q.8.
  2. Figures to the right indicates full marks.

Questions

  1. Q1

    1. a)

      Explain one wattmeter method for measuring active power in a 3-phase balanced R & L load. Draw respective circuit diagram.

      [8]
    2. b)

      A 3 phase 500V motor load has a power factor of 0.4, Two watt meters are connected to measure power. They show total power of 30 kW, find reading of each wattmeter.

      [6]
    3. c)

      Explain low power factor wattmeter.

      Also asked:May 2024

      [4]

  2. Q2

    1. a)

      A 3 phase, 10 KVA has a power factor of 0.342 the power is measured by two wattmeter method find reading of each wattmeter when PF is i) Lagging ii) Leading

      [8]
    2. b)

      Draw the possible method of connecting the pressure coil of a wattmeter and compare the errors. Explain the use of “compensation winding” in a wattmeter.

      [6]
    3. c)

      What is Blonded theorem explain briefly.

      [4]

  3. Q3

    1. a)

      With suitable block diagram explain working of electronic energy meter.

      Also asked:May 2025 ·Nov 2024 ·Nov 2023 ·May 2023

      [6]
    2. b)

      Explain in detail the working and construction of single phase induction type energy meter with a neat diagram.

      Also asked:Nov 2024 ·May 2024 ·Nov 2023 ·May 2023

      [8]
    3. c)

      Explain in brief TOD Meter. 2

      [3]

  4. Q4

    1. a)

      A single phase energy meter rated 200 volt, 50 Hz, 3200 impulses per kWh is connected across 200 volt supply and the load consists of 40  resistance. This circuit is on for 30 minutes. The energy meter completes 1590 blinks during this time. Determine percentage error in the energy meter.

      [8]
    2. b)

      With a suitable circuit diagram explain calibration of single phase energy meter.

      [6]
    3. c)

      Define energy, explain in brief energy measurement.

      [3]

  5. Q5

    1. a)

      With suitable diagrams explain phase angle and frequency measurement using Lissajous pattern in CRO.

      Also asked:May 2023

      [4]
    2. b)

      Explain any one electrical transducer used for pressure measurement.

      [6]
    3. c)

      With suitable diagram explain constructional details of CRT.

      [8]

  6. Q6

    1. a)

      With suitable diagrams explain working of resistive transducers and inductive transducers.

      [8]
    2. b)

      Explain capacitive transducers for pressure measurement with a neat diagram.

      Also asked:Nov 2024

      [6]
    3. c)

      On CRO screen sinusoidal signal of total occupancy vertical 3cm and horizontal 2cm. The front panel control of Volts/div & Times/div are 2 v/div & 2 ms/div respectively. Calculate i) r.m.s. value of voltage ii) Frequency

      [4]

  7. Q7

    1. a)

      With suitable diagram explain construction and working of semiconductor strain gauge. State any two advantages of it.

      Also asked:May 2023

      [8]
    2. b)

      Explain any one Electrical method for measurement of level.

      Also asked:Nov 2024

      [6]
    3. c)

      Draw a schematic diagram of LVDT. Label all the parts.

      [3]

  8. Q8

    1. a)

      Explain level measurement by mechanical method.

      Also asked:May 2025 ·Nov 2024 ·May 2024 ·May 2023

      [3]
    2. b)

      With suitable diagram explain ultrasonic method of level measurement.

      Also asked:May 2025 ·Nov 2024 ·May 2024 ·May 2023

      [6]
    3. c)

      This part has equations that don’t show as text. Open the PDF to read it.

      [8]