1
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
Commercially available ECL gates use two ground lines and one negative supply in order to
A
reduce power dissipation
B
increase fan-out
C
reduce loading effect
D
eliminate the effect of power line glitches or the biasing circuit.
2
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
A Darlington Emitter follower circuit is sometimes used in the output stage of a TTL gate in order to
A
increase its $${I_{OL}}$$
B
Reduce its $${I_{OH}}$$
C
Increase its speed of operation.
D
Reduce power Dissipation.
3
GATE ECE 1999
MCQ (Single Correct Answer)
+1
-0.3
The resolution of a 4-bit counting ADC is 0.5 Volts. For an analog input of 6.6 Volts, the digital output of the ADC will be
A
1011
B
1101
C
1100
D
1110
4
GATE ECE 1999
Subjective
+5
-0
The circuit diagram of a synchronous counter is shown in the figure. Determine the sequence of states of the counter assuming that the initial state is ‘000’. Give your answer in a tabulor form showing the present state QA(n), QB(n), QC(n), J-K inputs ( JA, KA, JB, KB, JC, K,) and the next state $${Q_{A\left( {n + 1} \right)}},\,{Q_{B\left( {n + 1} \right)}},{Q_{C\left( {n + 1} \right)}}$$ From the table, determine the modulus of the counter.
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