Sunday, 3 May 2015

EC2253 Electromagnetic Fields Most Important Questions – 2014 Edition

EC2253 Electromagnetic Fields Most Important Questions – 2014 Edition


1. State gauss law for the electric and magnetic fields. Derive its integral and differential forms. Make at least two conclusions

2. A positive charge Qv c/m3 occupies the volume of a sphere. At a point in the interior at a distance of r from the centre, a small probe of charge of +q is inserted. What is the force acting on the probe charge?

3. State ampere’s force law. How it is different from coulombs law?

4. Explain the tracing of a charged particle motion in x-y plane, in the region of crossed electric field B=B0 az.Assume that the charge q having mass m start at t=0 at that point with initial velocity v= vx ax + vyoay.What is the result for B0 = 0?

5. Prove that divergence of a curl of avector is zero,using stokes theorem

6. A magnetic field H= 3 cosx ax+z cosx ay,A/m for z0

= 0 for z<0

is applied to a perfectly conducting surface in xy plane. Find the current density on the conductor surface

7. Let A=5 ax and B= 4 ax+ By. Find by such that, angle between A and B is 45. If B also has a term Bz az, what relationship must exist between by By and Bz

8. A uniform line charge =25 nc/m lies on the line, x=-3m and y=4m, in free space. Find the electric field intensity at a point(2,3,15)m

9. Two small identical conducting sphere have charges of 2nc and -1nc respectively. When they are separated by 4cm apart, find the magnitude of the force between them. If they are brought into contacts and then again separated by 4cm, find the force between them

10. Obtain the expressions for D and E using gauss’s law


1. Derive the expression for coefficient of coupling in terms of mutual and self inductances

2. An iron ring with a cross sectioned of 3 cm2 and a mean circumference of 15 cm is wound with 250 turns wire carrying a current of 0.3A. The relative permeability of the ring is 1500. Calculate the flux established in the ring

3. Obtain the expressions for D and E using Gauss’s law

4. Write short notes on faradays laws of electromagnetic induction

5. Derive the electrostatic boundary conditions at the interface of two dielectric media. If one of the medium is conductor, discuss the field pattern

6. Discuss electric field in free space, dielectric and in conductors

7. Derive the expression for curl H=J

8. Explain the concepts of scalar magnetic potential and vector magnetic potential


1. Using the concept of magnetic vector potential, derive Biot Savart’s law and amperes law

2. Find the magnetic flux density at the centre of a square of sides equal to 5 cm and carrying 10A of current

3. List the properties of dielectric materials

4. Derive the expression for coefficient of coupling in terms of mutual and self inductances

5. Derive the expression for the capacitance of a parallel plate capacitor with two dielectric media

6. Derive an expression for inductance of a solenoid with N turns and l meter length carrying a current of I amperes

7. Explain in detail the principle of operation of a motor

8. Derive H due to a circular current loop and extend the same to compute H due to a long solenoid?

9. Derive the boundary relation at the boundary between a conductor and dielectric


1. Derive general field relations for time varying electric and magnetic fields using Maxwell’s equation

2. On the basis of the analysis of the transmission line compare circuit theory and field theory

3. With necessary explanation, derive the Maxwell’s equation in differential and integral forms

4. What do you mean by displacement current? Write down the expression for the total current density

5. Derive the expression for total power flow in coaxial cable

6. Derive Maxwell’s equations derived from amperes law in integral and point forms

7. Explain briefly about the motional emf and derive an expression for it

8. Discuss the pointing sector and pointing theorem

9. Define faradays laws. What are the different ways of emf generation? Explain with governing equation and suitable example for each


1. Derive wave equations in phasor form and also derive for

2. Explain about the propagation of EM waves in good conductor

3. Derive the transmission and reflection coefficients for the electromagnetic waves. Discuss the above for an open line and a short circuited line

4. Derive the electromagnetic wave equations

5. State pointing vector and establish its usage in EM wave analysis

6. Discuss the wave motion in good conductors

7. Explain the reflection of plane waves by a perfect dielectric

8. Derive the expression for input impedance and standing wave ratio of transmission lines

9. Define Brewster angle and derive its expression

10. Derive the relationship between electric and magnetic fields



1) What is the concept of Management, Explain its Nature, Scope and
importance to the organisation 
2) What is Management, Explain the functions of Management
3) Explain the Principles of Management or describe the 14 principles of 
Management as outlined by Henry Fayol
4) Explain the evolution of Management
1) Explain the principles of a sound organisation 
2) What is an organisation, Explain its levels and types
3) What do you mean by Departmentization, evaluate any three methods of Departmentization
1) What is Plant location, explain factors affecting plant location
2) Define productivity and production, explain how productivity can be enhanced in the Indian industries
3) Explain the concept of SQC, explain how you can construct control charts for the variables
ü Mean charts
ü Range charts
ü P-charts
ü np-charts
ü C-charts
Note: Required Table value for the calculation of Mean and Range problems

1) What is Inventory, explain the methods of pricing while issuing of Materila(FIFO,LIFO,HIFO,Weighted average and Simple average)
2) What is Marketing, Explain the functions of Marketing
3) What is PLC, explain various stages in PLC with diagram
ü FIFO, LIFO, Weighted Avg., and Simple Avg.
ü EOQ, ABC problems
1) What is HRM, Explain the differences between personnel management & industrial relation and HRM
2) Explain the Functions of HR or personnel Manager
3) What is job evaluation, explain its advantages and methods of job evaluation
1) What is Network analysis, explain the difference between PERT and CPM
2) What is Project Management, explain the nature of cost and time in project
Note: Table value is required in PERT problems when estimated time is given

1) What is corporate planning, explain the characteristics of Mission statement
2) Explain the major elements under corporate planning
3) What is environmental scanning, explain the importance of environmental scanning to the organisation
4) What is SWOT analysis, explain the significance of swot analysis
5) How the Mission statement is different from the vision
1) What is J-I-T, Explain the importance of JIT in present scenario(Have to write one case study)
2) Explain how products are developed in TQM environment
3) Explain the importance of Six sigma
4) Explain the importance of supply chain management process
Note: one case study should write the above contemporary management techniques



Faculty: Sanjay Kumar-Associate Professor-VITS

NOTE: The following are only guess questions, students advised to follow complete syllabus apart from these questions for external exam.

  1. Explain the nature & features of Management? 16M

  1. a) Explain the importance of Management? 8M
b) Explain Henri Fayol’s principles of Management? 8M

  1. Explain the principles of Organisation? 16M

  1. a) Explain FW Taylor’s ‘Functional Organisation’ structure with merits & demerits?                                                                                      8M
b) Explain modern trends in Organisational structure designs? 8M

  1. Explain the factors affecting the plant location?  16M

  1. Explain the differences between Job, Batch & Mass Production? 16 M

  1. Define SQC (Statistical Quality Control)? Explain Deming’s contribution to Quality (Hint: Deming’s 14 Points on SQC)?  16 M

  1. Explain the stages in PLC (Product Life Cycle)? 16 M

  1. Explain the/four strategies of Manpower Planning Process (or) Explain Succession, Staff Development, Recruitment & Redundancy Strategies of Manpower Planning Process? 16 M

  1. Explain Training Methods? (Hint: Write about Off Job On job training methods) 16 M

  1. Define Job Evaluation & explain the methods of Job Evaluation? 16 M

  1. Explain the steps involved in performance appraisal (Hint: Diagram must)? 16M

  1. Define PERT, CPM, NORMAL TIME, CRASH TIME, NORMAL COST, CRASH COST, EST, LST, EFT, LST, SLACK, FLOAT? (Hint: Understand the differences & relationships among the above terms) 16M

  1. Define Corporate Mission & Explain the characteristics of Mission Statement? 16 M

  1. Explain the Elements of Corporate Planning Process? 16 M

  1. Explain Environmental Scanning Process? 16 M

Hint for 14, 15, and 16 questions: Diagram must.



Learn the definitions of the following.
  1. MIS- Management Information Systems
  2. MRP- Materials Requirement Planning
  3. JIT- Just in Time
  4. EUC- End User Computing
  5. TQM- Total Quality management
  6. Six Sigma
  7. CMM- Capability Maturity Model
  8. Value Chain Analysis
  9. SCM- Supply Chain Management
  10. ERP- Enterprise Resource Planning
  11. BPO- Business Process Outsourcing
  12. BPR- Business Process Reengineering

Focus more on Six Sigma, TQM, SCM, and ERP in-detail as you may expect a question & they may ask very generic question about any Indian Company practicing these techniques.
(Hint: - Do Goggle to know Indian Companies practicing TQM, Six Sigma, SCM & ERP)

  1. Refer problems on X­ bar, R & C Charts. 16M

  1. Refer Problems on Networking & CPM. 16M

JNTU Management Science Question Paper Apr-May 2008

JNTU Management Science Question Paper Apr-May 2008
(Metallurgy & Material Technology)

Time: 3 hours Max Marks: 80

Answer any FIVE Questions

All Questions carry equal marks

1. What is Maslow’s hierarchy of human needs? Explain. [16]

2. (a) Why does social responsibility become an important facet of management in the present times?

(b) How is it discharged? [8+8]

3. (a) What are the objectives of plant layout?

(b) Explain the factors influencing plant layout. [8+8]

4. (a) What are the costs associated with effective inventory control?

(b) How would you deal with them in modern management? [8+8]

5. What are the key functions of a Human Resource Manager? [16]

6. How does job analysis form the basis for job description and job specifications?

How does it help the personnel manager? [16]

7. How do you translate corporate vision into action? Explain with an example? [16]

8. A manufacturing company is planning to introduce a new product commercially. The list of activities to be carried out with the corresponding duration of time in weeks is listed below. [16]

Activity description duration immediate predecessor

A initial discussions 3 -

B product design 11 A

C market survey 9 A

D market evaluation 2 C

E product costing 5 B

F Sales plan 6 C

G Product pricing 2 D,E

H Prototype construction 11 F,G

I Market information preparation 8 B

J Prototype testing 9 H,I

Draw the network to represent various activities of the project, determine the minimum

duration of the project.

Management Science Important questions

1. Nature & Importance of Management & Henry Fayol’s Principles of Management.
2. Taylors Scientific Theory of Management.
3. Motivational Theories (Maslow’s, Mc.Gregors, Herzberg)
4. Leadership Styles
5. Departmentation & Decentralisation
6. Types of Organisational Structures
7. Name and describe the various tools and techniques used in layout planning.
8. What is plant layout? Explain the advantages of a good layout.
9. What are the objectives of method study & Work Study?
10. What is inventory control? Give a brief classification of inventories.
11. Describe the various types of store registers.
12. Explain Marketing Mix & different Marketing Strategies
13. Different Channels of Distribution
14. Distinguish between strategic and operational planning
15. Expalin SWOT Analysis? Briefly explain the steps in Strategic Planning process
16. Functions of HR Manager.
17. Types of Plans
18. Explain the following terms (a) Economic order quantity and Lead time (b) Safety stock and Re-order point (c) Maximum inventory and Minimum inventory (d) Average inventory and Inventory consumption trend
(e) Just-in-Time (JIT) (f) Balanced Scored Card.

Electromagnetic Theory and Transmission Lines questions and answers

Electromagnetic Theory and Transmission Lines questions and answers


Unit-I: Electrostatics-I

Section-I: Multiple choice questions

1. The divergence theorem [d ]
a) Relates a line integral to a surface integral. 
b) holds for specific vector fields only.
c) Works for open surfaces. d) Relates a surface integral to a volume integral.

2. which one of the following is not Maxwell equation? [ d ]

3. Which of the following is zero? [ c]
a)grad div b)curl grad c)div grad d)curl curl

4. The field intensity due to a point charge Q at a distance, R, is E1. If charge is increased to ‘4Q’ and distance is increased to ‘2R’, the field intensity E2 becomes [a ]
(a) E2 = E1 (b) E2 = 4E1 (c) E2 = 2E1 (d) E2 = E1/2

5. Electrostatic field being conservative doe s not mean [ c ]
(a) Its circulation is identically zero (b) the work done in side a closed path inside the field is zero
(c) The potential difference between any two point s is zero (d) it is the gradient of a scalar potential

6. A charge Q is uniformly distributed in a sphere of radius a1 the charge density, if the same charge Q is made to occupy a sphere of radius a2=a1/4 is [ c ]
(a) 16 times more (b) 4 times more (c) 64 times more (d) 2 times more

Section-II: Fill in the blanks

10. If the electric flux density, D and electric field intensity, E are not in the same direction, the material is called as Anisotropic medium

11. Value of permeability of free space is 4π ×10^-7 H/ m.

12. According to Gauss’s law electrical flux due to any closed surface is equal to the charge enclosed by the surface.

13. Point charges 30 nC , – 20nC and 10 nC are located at (-1,0, 2) , (0,0, 0) and (1,5,-1) respectively. The total flux leaving a cube of side 6m centered at the origin is 10NC..