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6002 [ Turn over

Name : …………………………………………….………………

Roll No. : …………………………………………...……………..

Invigilator’s Signature : ………………………………………..

CS/B.Tech (New)/CE/EE/CSE/IT/ECE/EIE/EEE/ICE/PWE/CHE/BME/FT/CT/LT(New)/SEM-6/HU-601/2013

2013

PRINCIPLES OF MANAGEMENT

Time Allotted : 3 Hours Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

( Multiple Choice Type Questions )

1. Choose the correct alternatives for any ten of the following :

10 × 1 = 10

i) In the Managerial Hierarchy a Departmental Manager

belongs to

a) Top Management Level

b) Middle Management Level

c) Frontline Management Level

d) None of these.

ii) F.W. Taylor is also known as the father of

a) Scientific approach to management

b) Functional approach to management

c) Behavioural approach to management

d) Bureaucratic approach to management.


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iii) Which of the following can be accepted as a type of

plan ?

a) Policy b) Procedure

c) Rule d) All of these.

iv) In the MBO system, the manager

a) sets objectives for subordinates

b) sets objectives for superiors

c) sets objectives for peers

d) none of these.

v) Span of Management refers to the number of

subordinates that can be effectively supervised by

a) two managers b) multiple managers

c) one manager d) none of these.

vi) The process of developing an applicant’s pool for job

openings in an organization is called

a) Hiring b) Recruitment

c) Selection d) Retention.

vii) The essence of decision making is

a) choosing between alternatives

b) problem solving

c) developing alternative courses of action

d) monitoring.


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viii) Total Quality Management (TQM) programmes are more

likely to remain effective if a number of prescriptions are

followed. Which of the following prescriptions should

not be followed ?

a) Quality improvement relates to operation’s

performance objectives

b) TQM does not become a separate ‘bolt-on’ set of

activities

c) Slogans and exhortations about TQM’s

effectiveness are avoided

d) TQM should become a substitute for normal

managerial leadership.

ix) Which of the following shows the process of creating

something new ?

a) Business model b) Modelling

c) Innovation d) Creative flexibility.

x) Which of the following gives suggestions for new product

and also helps to market new products ?

a) Existing products and services

b) Distribution channels

c) Federal government

d) Consumers.


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xi) Debt Equity ratio indicates

a) the proportion of debt with respect to equity

b) the proportion of debt with respect to total capital

employed

c) the proportion of equity with respect to total assets

d) none of these.

xii) In Quality Circle

a) only Top Management is involved

b) only Steering Committee members are involved

c) both (a) and (b) are involved

d) neither (a) nor (b) is involved.

GROUP – B

( Short Answer Type Questions )

Answer any three of the following.

3 × 5 = 15

2. What is meant by internal source of recruitment ? What are

the merits and limitations of employment tests ?

3. What is job satisfaction ? What are the factors which

determine job satisfaction ?

4. What is the concept of planning as an element of

management process ? Discuss its role in business

organization.


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5. How will you classify the levels of management in an

organization ? Describe the functions performed by different

levels of management.

6. 'A good leader is not necessarily a good manager.' Discuss

this statement and compare leadership with management.

GROUP – C

( Long Answer Type Questions )

Answer any three of the following. 3 × 15 = 45

7. a) What is SQC ? State its advantages.

b) The following table gives the date for the measurement

of a product :

Sample No. 1 2 3 4 5

Mean 14 18 15 17 16

Range 7 12 4 11 5

Compute control limits and draw the control chart.

5 + 10

8. a) Differentiate between marketing and selling.

b) What is marketing mix ? Discuss the elements of

marketing mix and its implications in marketing

planning. 5 + 10

9. a) What is sales forecasting ? Why is it important ?


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b) The sales of refrigerators for a six month period for

M/s National Mixer Co. are as follows :

Month : Jan Feb March April May June

Sales

('000 units) : 18 15 20 18 22 20

i) Find Linear trend equation.

ii) Estimate the sales for the month of July. 5 + 10

10. Write short notes on any three of the following : 3 × 5

a) MBO

b) Ratio analysis

c) Leadership styles

d) Decision making tools

e) Stress Management

f) TQM.

11. a) A Company has got a demand for particular part at

10,000 units per year. The cost per unit is Rs. 2 & it

costs Rs. 36 to place an order and to process the

delivery. The inventory carrying cost is estimated at 9%

of average inventory investment.

Determine :

i) Economic order quantity. (EOQ)

ii) Optimum no. of orders placed per annum.

iii) Minimum total cost of inventory per annum.


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b) What do you understand by Economic Order Quantity ?

Explain graphically.

c) Discuss the various Sales Promotion methods that a

company can undertake to increase sales of its

products. 6 + 4 + 5

Name : ……………………………………………………………

Roll No. : ………………………………………………………...

Invigilator's Signature : ……………………………………….

CS/B.Tech/ECE/New/SEM-6/EC-601/2013

2013DIGITAL COMMUNICATION

Time Allotted : 3 Hours Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

( Multiple Choice Type Questions )

1. Choose the correct alternatives for any ten of the following :10 1 = 10

i) A random variable is determined by a large number of

independent events that tends to have a Gaussian

probability distribution. This can be described using

a) Central limit theorem

b) Superposition

c) Convolution

d) Correlation.

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ii) An ergodic random process is one which has the

property that

a) ensemble average is constant

b) time average varies with time

c) ensemble average constant but time average varies

with time

d) ensemble average and time average are equal.

iii) The main advantage of PCM system is

a) possibility of TDM

b) less channel bandwidth

c) less transmission power

d) better noise performance.

iv) To avoid aliasing, what is the Nyquist rate of the signal

x ( t ) = 8 cos ( 200 t ) ?

a) 50 Hz b) 100 Hz

c) 200 Hz d) 400 Hz.

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v) The use of non-uniform quantization leads to

a) reduction to transmission BW

b) increase in maximum SNR

c) increase in SNR for low level signals

d) simplification of quantization process.

vi) Regenerative repeaters can be used in

a) analog communication system only

b) digital communication system only

c) analog & digital communication systems

d) none of these.

vii) The spectral density of white noise is

a) Exponential b) Uniform

c) Poisson d) Gaussian.

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viii) Adaptive delta modulation is preferred over delta

moldulation as

a) it gives better noise performance

b) it uses lesser bits for encoding the signal

c) it does not suffer from slope overload and

threshold effect

d) it has simpler circuitry.

ix) For generation of FSK the data pattern must be given in

a) RZ format

b) NRZ format

c) Split phase Manchester

d) none of these.

x) Which of the digital modulation techniques is used for

high speed telephone modems ?

a) QAM b) GMSK

c) QPSK d) GFSK.

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xi) The bit rate of a digital communication system is

34 Mpbs. The modulation scheme is QPSK. The baud

rate of the system is

a) 68 Mbps b) 34 Mbps

c) 17 Mbps d) 85 Mbps.

xii) Eye pattern is used to study

a) ISI b) Quantization noise

c) Error rate d) None of these.

GROUP – B( Short Answer Type Questions )Answer any three of the following. 3 5 = 15

2. State the reason of importance of Gaussian random variable.

What is error function ? 2 + 3

3. Write down sampling theorem. Discuss different methods of

sampling. 2 + 3

4. For the data bit 10110001, draw the waveforms for

ASK, FSK, PSK, QPSK.

5. How is orthogonality of two signals defined ? Explain the

term 'norm of the signal' ? What is physical significance ?

2 + 2 + 1

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6. What is quantization error ? How does it depend upon the

step size ? Suggest some methods to overcome the

difficulties encountered when the modulating signal

amplitude swing is very large. 1 + 2 + 2

GROUP – C( Long Answer Type Questions )Answer any three of the following. 3 15 = 45

7. a) What is conditional probability ?

b) Differentiate between random variable and random

process with suitable example.

c) State Central limit theorem.

d) Prove the Gram-Schmidt orthogonalization procedure.

e) Discuss the property of auto-correlation functions.

2 + 3 + 2 + 5 + 3

8. a) With neat block diagram, explain the generation &

reception of Delta Modulation ( DM ).

b) What are the limitations of DM ? How these can be

solved ?

c) For a sinusoidal signal ( A cos t ), find the condition

for no slope overload, if step size is & sampling

period is Ts. 6 + ( 3 + 2 ) + 4

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9. a) Draw the block diagram of a QPSK transmitter and

receiver and explain the generation of QPSK signal.

Show its State Space Representation.

b) Compare the bandwidth and probability of error of

16 MPSK with QASK.

c) List the advantages and disadvantages of DPSK

Modulation technique. 2 + 5 + 2 + 3 + 3

10. a) What is Nyquist criterion for Inter-symbol interference ?

b) What are the limitations of ideal solution and how it can

be solved with the help of Raised Cosine Function ?

c) Write a short note on zero forcing equalizer. 5 + 5 + 5

11. Write short notes on any three of the following : 3 5

a) Matched filter

b) Adaptive delta modulator

c) Pulse time modulation

d) Regenerative repeater

e) Eye pattern.

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WBUT Electronics And CommunicationEngineering 6th Semester Previous

Year Question Paper

Publisher : Faculty Notes Author : Panel Of Experts

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