# Electricity Magnetism Past Papers Exam Questions

By Prof. Fazal Rehman Shamil

## Guess Paper 1: Electric Machines Fall – 2020 Past Papers

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1 Define the following;
a) Gravitational Energy
b) Mechanical Energy
c) Electric Power
d) Resistance
e) Doping
f) Kinetic Energy
g) Ammeter

Q.2 What do you understand by torque and angular momentum for system of particles.Explain with an example.

Q. 3 Define Electric forces. If two charges of 30 micro-coulomb and 40 micro-coulomb are placed at a distance of 1 cm. Find the repulsive force between these charges.

Q. 4 Discuss the B-H loop and hysteresis in detail .

Q.5 What are semiconductors devices ? How a diode is biased? Explain both the forward and
reverse biasing.

Q.6 (a) Define work.
(b) A force of 10 N is applied on a mass of 100 Kg and displaces it at a distance of 5 meters in the direction of force making an angle of 30o. What amount of work has been done on the mass?

Q.7 Explain the Lenz’sLaw in detail.

Q.8 Write short note on any TWO of the following.
i. Mutual inductance
ii. Guass’s Law
iii. EM waves

## Guess Paper 2: Electric Machines Spring- 2020 Past Papers

Time Allowed: 3 hours

Total Marks:    70, Passing Marks (35)

Q.1 Define the following;
a) Periodic Motion
b) Hertz
c) Voltage
d) Capacitance
e) Biasing
f) Intrinsic
g) Dipole

Q.2 What do you understand by transverse and longitudinal waves? Explain with an example.
Q. 3 Define Electric Flux. If two charges of 20 micro-coulomb and 40 micro-coulomb are placed at a distance of 2 cm. Find the repulsive force between these charges.

Q. 4 Discuss the Lenz’s law and derive its equation.

Q.5 What is PN junction? How a diode is biased? Explain both the forward and reverse biasing.

Q.6 (a) Define work-energy theorem.
(b) A force of 10 N is applied on a mass of 10 Kg and displaces it at a distance of 20 meters in the direction of force making an angle of 30o. What amount of work has been done on the mass?

Q.7 Explain the Newton’s 2ndLaw of rotation in detail.

Q.8 Write short note on any TWO of the following.
i. Hook’s Law
ii. BiotSavert Law
iii. Youngs double slit experiment

## Electrical Engineering Past Papers and Guess(EE)

1. Calculus & analytic geometry past papers
2. Introduction to computing past papers
3. Electricity and magnetism past papers
4. APPLIED LINEAR ALGEBRA past papers
5. Programming Fundamentals Past Papers
6. Electronic devices and circuits
7. Digital Logic Design DLD Past Papers
8. Basic Electronics & DLD Past Papers
9. Functional English Past Papers
10. Differential Equations Past Papers
11. Data Structures Past Papers
12. Electric Machines Past Papers
13. Network Analysis Past Papers
14. Numerical Analysis Past Papers
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16. complex variables and transform past papers
17. Engineering drawing and AutoCAD past papers
18. Applied Thermodynamics Past Papers
19. Communication and presentation skills Past Papers
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21. Communication Systems Past Papers
22. Embedded Systems Past Papers
23. Basic Electronics Instrumentation Past Papers
24. Power Transmission Distribution Past Papers
25. Linear control systems Past Papers
26. Probability Methods in Engineering Past Papers
27. Engineering Economics Past Papers
28. Technical Report Writing Past Papers
29. Professional Ethics Past Papers Prof.Fazal Rehman Shamil (Available for Professional Discussions)
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