BTCL Previous Question | Assistant Manager (Technical) | BUET Pattern | Full Question Solution 2021

April 3, 2021 Alice AUSTIN

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Find the value of resistance Rab
Find voltage gain A0 from the following OP-AMP circuit.
A PCM system has step resolution of 2V. Sinusoidal signal amplitude 10V, Find the Level, SNR(dB), and total number of bits?
A TDMA system has 8Tx-Rx pairs, sampled at 8KHz and number of bit 16 per sample. If 2 additional bit is added as synchronization bit, what will be the data rate?
Write a program to calculate the summation of digits of a number using recursive function in any language.
Given IP address 192.168.10.0/23. find Subnet mask, Broadcast address, Last usable address.
Write the name of protocol.
1. Sending a mail from sender’s computer to mail server———-
2. Dynamically assign IP address——-
3. Converts IP address to MAC Address—-
4. Send error message to the Source IP of the originating packet——
5. A 1550nm fiber-optic transmission link is of 50KM length without repeater with a single mode fiber having loss of 0.2 db/Km. The fiber is joined every 2Km with conductors each with 0.5dB loss.
Determine the minimum average power which should be launched into the fiber in order to maintain an average optical power level of 10microW at the receiver?

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