Electrical Measurements & Instrumentation (EMI) SPPU Endsem Question Paper May 2024
All 8 questions from this SPPU endsem paper, as printed. Read them here or open the PDF.
- Subject code
- 203144
- Pattern
- 2019 pattern
- Exam
- Endsem
- Session
- May 2024
- Max. marks
- 70
- Time
- 2½ Hours
- Semester
- III
- Paper code
- [6261]-19
Printed for: S.E. (Electrical)
Instructions to the candidates
- Answer Q1 or Q2, Q3 or Q4, Q5 or Q6, Q7 or Q8.
- Neat diagrams must be drawn wherever necessary.
- Figures to the right side indicate full marks.
- Assume suitable data if necessary.
Questions
Q1
- a)[8]
This part has equations that don’t show as text. Open the PDF to read it.
- b)[6]
A circuit takes 10 A at 200 V. The power absorbed is 1000 W. If resistance of current coil is 0.15 and that of pressure coil is 5000 , calculate the error when i) Pressure coil is connected on supply side of the circuit ii) Pressure coil is connected on load side of the circuit
- c)[4]
Write a note on low power factor wattmeter.
Also asked:Nov 2025
OR- a)
Q2
- a)[5]
When the power of 3 phase balanced star connected load is measured by single wattmeter method with current coil in R phase and pressure coil between R phase and neutral, it showed 6 kW. The load current is 30 A at 400 V. What will be the reading of wattmeter if connections of current coil remain same but pressure coil is connected between Y and B phases.
Also asked:Nov 2024
- b)[7]
With neat diagram, derive the torque equation of a single phase electrodynamometer type wattmeter.
- c)[6]
Explain error due to inductance of pressure coil in single phase wattmeter. Hence state significance of multiplying factor. 2
- a)
Q3
- a)[5]
In a test of 30 min duration with a constant current of 12 A through UPF load, meter registered 1.50 kWh. If the meter is subsequently used on 230 V supply, determine its error and state weather meter is running fast or slow.
- b)[7]
Explain with neat diagram and necessary phasor diagrams, how single- phase energy meter can be calibrated at different power factors using resistive load.
Also asked:Nov 2023
- c)[5]
Write a note on TOD meter
OR- a)
Q4
- a)[7]
A single phase energy meter is supplying power to a unity p.f load at 240 V, 4.4 A for a period of 5 hours. i) If disc makes 2400 revolutions, calculate the meter constant ii) Calculate the p.f. of the load if the load is operated for 4 hours at 240 V, 5 A and meter making 1500 revolutions.
Also asked:Nov 2023
- b)[10]
Draw neat diagram of induction type energy meter, label all the parts and explain its construction and working.
- a)
Q5
- a)[6]
With neat diagram, explain Pirani gauge for measurement of low pressure
- b)[4]
Draw the representation of lissagious patterns for following frequency ratios i) 2:1 ii) 1:3 iii) 1:1 iv) 2:3
- c)[8]
Give detailed classification of transducers along with examples of each type.
Also asked:Nov 2023
OR- a)
Q6
- a)[7]
Explain construction and working of cathode ray oscilloscope.
Also asked:May 2025
- b)[5]
Explain resistive pressure transducers.
- c)[6]
Define pressure? Explain importance of pressure measurement in electrical systems hence give min five units in which pressure can be measured. 3
- a)
Q7
- a)[6]
With neat diagram, explain capacitive method for level measurement.
- b)[6]
Explain construction and working of bonded and unbonded strain gauge.
Also asked:May 2025
- c)[5]
Draw and justify characteristic of LVDT hence give various specifications of LVDT.
OR- a)
Q8