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# BE8254 Question Bank Basic Electrical and Instrumentation Engineering

BE8254 Question Bank Basic Electrical and Instrumentation Engineering Regulation 2017 Anna University free download.

## Sample BE8254 Question Bank Basic Electrical and Instrumentation Engineering:

1. Point out the advantages of 3Φ system over 1Φ system. 4 Analyze

2. Define power factor. 1 Remember

3. Define line voltage and line current. 1 Remember

4. Write the expression for determining reactive and apparent power in a three
phase circuit.

5. Compare star and delta connected system. 3 Apply (BE8254 Question Bank Basic Electrical and Instrumentation Engineering)

6. What is balanced and unbalanced system? 2 Understand

7. Draw the phasor diagram of line currents and line voltages of a balanced delta

8. Evaluate the voltage across Y and B in a 3 Φ balanced delta system with
voltage across R and Y is 400∠00 V. Assume RYB phase sequence

9. A 3Φ 400V supply is given to a balanced star connected load of impedance 8+j6
ohms in each branch. Formulate the line current. (BE8254 Question Bank Basic Electrical and Instrumentation Engineering)

10. In two wattmeter power measurement method, if one wattmeter reads zero,
analyze the power factor of the circuit.

11. What are the requirements of protection? 2 Understand

12. What are the basic requirements of a circuit breaker? 2 Understand

13. Differentiate between fuse and protective relay. 2 Understand

14. What is the importance of arc resistance? On what factor does it depend?

15. Distinguish between recovery voltage and restriking voltage? 3 Apply

16. Define the term maximum demand. 1 Remember (BE8254 Question Bank Basic Electrical and Instrumentation Engineering)

17. List the objectives of tariff and the factors affecting it. 1 Remember

18. What is meant by relay operating tme? 1 Remember

19. Write the effect of power factor in energy consumption billing. 3 Apply

20. Calculate the power factor if V(t)=Vm sinωt and I(t)=Im sin(ωt -450) (BE8254 Question Bank Basic Electrical and Instrumentation Engineering)

 Subject Name BASIC ELECTRICAL AND INSTRUMENTATION ENGINEERING Subject Code BE8254 Regulation 2017 File PDF