ESE EC 2018 Achiever Study Plan: Digital Circuits Quiz 6

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Question 1

A 3-bit ripple counter is constructed using three T flip-flops to do the binary counting. The three flip-flops have T-inputs fixed at

• A0, 0 and 1
• B1, 0 and 1
• C0, 1 and 1
• D1, 1 and 1

Question 2

In an R-2R ladder circuit, what will be the expression for equivalent resistance?

• A
• B
• C
• D

Question 3

Under which triggering phenomena, the input will be transformed to output in a shift register.(take clock is positive edge triggered)

• Aduring zero edge triggering
• Bduring negative edge triggering
• Cduring positive edge triggering
• Dnot possible

Question 4

An asynchronous link between two computers uses the start-stop scheme, with one start bit and one stop bit, and a transmission rate of 48.8 kbits/s. What is the effective transmission rate as seen by the two computers?

• A480 bytes/s
• B488 Bytes/s
• C4880 bytes/s
• D4800 bytes/s

Question 5

From the truth table shown, select the gate circuit?(Given o/p is C) 

• A
• B
• C
• Dnone of these

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