BEEE Question Bank

Unit 1

What is Power Factor? What is its significance? 4M
Verify the KCL to the given circuit 4M
Kirchhoff’s laws with examples 4M
DC and AC 4M
Define the following parameters 4M
Explain Power Triangle & Define all the terms in the power triangle 4M
V(t) = 10 cos(4t + 45°) Find Magnitude, Frequency, Time Period, RMS Value, Average value & Phase Angle 4M
Define & Derive RMS Value and Average Value 4M
Find the Equivalent resistance & total current to the given circuit 4M
Find ix for the given circuit 4M
I(t) = 2 sin(5t - 45°) Find Magnitude, Frequency, Time Period, RMS Value, Average value & Phase Angle 4M

Q1a — What is an Electrical Machine? Briefly explain the conversion of energy from one form to another with its principle 4M ⭐️

Q1b — Compare the operational difference between a Transformer and an Induction Motor 4M

Q2a — Classify different types of measuring instruments used to measure AC and DC quantities with their basic principles 4M ⭐️

Q2b — Classify different types of resistors. How is high resistance measured? Explain with a neat sketch 4M

Q3a — What is the difference between Back EMF and Generated EMF? State the function of each and explain briefly 4M

Q3b — Why are single-phase induction motors not self-starting? Explain any two types of single-phase induction motors with neat diagrams 4M

Q4a — What is the role of a Transformer in an electrical power system? Explain the operation of a transformer with a neat diagram 4M ⭐️

Q4b — How do you find the direction of mechanical and electrical output of machines? Explain the principle of each 4M

Q5a — Describe the role of a Commutator in DC machines. Explain 4M

Q5b — How is medium resistance found? Explain the principle and derive the expression for the unknown resistor 4M

Q6a — Draw a neat sketch of a PMMC instrument and explain its operation 4M ⭐️

Q6b — Compare different types of MI instruments and explain their principles 4Mt