What is network security? Explain its types.
See Answer →With an appropriate diagram, explain the construction of graded index multimode fibre. How does it reduce the modal dispersion?
See Answer →Explain the construction of a Schottky diode and state its advantages over normal p-n junction diode.
See Answer →Describe the working of a CCD camera.
See Answer →Explain the image frequency and double spotting phenomena in case of AM receivers. How can they be overcome?
See Answer →In mobile telephony explain in detail the functions of base station and mobile switching centre.
See Answer →State the various techniques used for analog modulation of a digital signal carrier. How are they used for continuous wave transmission and two tone modulation systems? State the advantages of two tone modulation system.
See Answer →Explain, how digital coding can help in overcoming the burst error noise in signal transmission.
See Answer →Explain the working of balance modulator for AM generation. State its advantages over a transformer coupled class-C amplifier based AM generator.
See Answer →A dipole antenna of carries
peak current at
frequency. Calculate the radiation intensity in the side-on direction at a distance of
.
Calculate the noise power and noise voltage generated by a 1MΩ resistor at 37°C over a 1 MHz bandwidth.
See Answer →Explain the procedure of stub matching in transmission lines.
See Answer →What approach is followed in practice for the choice of a propagation medium for any communication system ? Why is a linear medium of propagation preferred?
See Answer →State with reasons whether the following statements are True or False.
i) Rise time of a pulse is the time required for the amplitude to reach from 0% to 100% of the peak amplitude value.
ii) Standing wave ratio of a matched transmission line is zero.
iii) Amplitude modulation index for dc modulating signal is 100%.
iv) Multipoint communication system in telephony is more efficient than point-to-point communication.
v) Though audio frequency range is 20 Hz to 20 kHz, the telephone uses only 4 kHz bandwidth per channel, still the communication is audible.
vi) In superheterodyne receiver the local oscillator always operates at a fixed frequency.
vii) Bandwidth of video amplifier of the monochrome receiver is narrower than that in the case of colour video amplifier.
viii) Polarization discrimination technique doubles the bandwidth of the channel.
ix) Token ring protocol suffers with the data collision problem.
x) The compact structure of OSI model makes data transfer efficient as compared to TCP/IP model.
See Answer →Alpha Ltd. is examining the question of relaxing its credit policy. It sells at present 20,000 units at a price of Rs. 100 per unit. The variable cost per unit is Rs. 88 and average cost per unit at the current sales volume is Rs. 92. All the sales are on credit, the average collection period being 36 days.
A relaxed credit policy is expected to increase sales by 10% and the average age of receivables to 60 days. Assuming 15% return, should the firm relax its credit policy?
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Alpha Ltd. is examining the question of relaxing its credit policy. It sells at present 20,000 units at a price of Rs. 100 per unit. The variable cost per unit is Rs. 88 and average cost per unit at the current sales volume is Rs. 92. All the sales are on credit, the average collection period being 36 days.
See Answer →"Liquidity and Profitability are significant factors which are taken into consideration while taking working capital decisions." Discuss. Explain the relation between liquidity, profitability and working capital.
See Answer →Why has Reserve Bank of India (RBI) made it compulsory for the banks to introduce loan component in the credit granted to big borrowers.
See Answer →You are required to prepare a Cash Budget of XYZ Ltd. for the months of May, June and July 2026 from the information given below:
(a) Income and Expenditure Forecasts:
| Months | Credit Sales | Credit Purchases | Wages | Manufacturing Expenses | Office Expenses | Selling Expenses |
|---|---|---|---|---|---|---|
| March | 60,000 | 36,000 | 9,000 | 4,000 | 2,000 | 4,000 |
| April | 62,000 | 38,000 | 8,000 | 3,000 | 1,500 | 5,000 |
| May | 65,000 | 33,000 | 10,000 | 4,500 | 2,500 | 4,500 |
| June | 58,000 | 35,000 | 8,500 | 3,500 | 2,000 | 3,500 |
| July | 56,000 | 39,000 | 9,500 | 4,000 | 1,000 | 4,500 |
| August | 60,000 | 34,000 | 8,000 | 3,000 | 1,500 | 4,500 |
b) Cash balance on 1st May 2026 is Rs. 8,000.
c) Plant costing Rs. 16,000 is due for delivery in July, payable 10% on delivery and the balance after 3 months.
d) Advance Tax of Rs. 8,000 each is payable in March and June.
e) Period of credit allowed
(i) by suppliers is two months and
(ii) to customers is one month.
f) Lag in payment of manufacturing expenses is half month.
g) Lag in payment of office and selling expenses is one month.
See Answer →As a Finance Manager describe the various factors that you would take into consideration before assessing the working capital requirements of your firm.
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