1
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
In the circuit shown, diodes $${D_1}$$ ,$${D_2}$$ and $${D_3}$$ are ideal, and the inputs $${E_1}$$ , $${E_2}$$ and $${E_3}$$ are “0 V” for logic ‘0’ and “10 V” for logic ‘1’. What logic gate does the circuit represent? GATE ECE 2015 Set 3 Digital Circuits - Logic Gates Question 20 English
A
3-input OR gate
B
3-input NOR gate
C
3-input AND gate
D
3-input XOR gate
2
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+2
-0.6
An SR latch is implemented using TTL gates as shown in the figure. The set and reset pulse inputs are provided using the push-button switches. It is observed that the circuit fails to work as desired. The SR latch can be made functional by changing GATE ECE 2015 Set 3 Digital Circuits - Sequential Circuits Question 34 English
A
NOR gates to NAND gates
B
inverts to buffers
C
NOR gates to NAND gates and inverters to buffers
D
5 V to ground
3
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+2
-0.6
A universal logic gate can implement any Boolean function by connecting sufficient number of them appropriately. Three gates are shown. GATE ECE 2015 Set 3 Digital Circuits - Logic Gates Question 10 English 1 GATE ECE 2015 Set 3 Digital Circuits - Logic Gates Question 10 English 2

Which one of the following statesments is TRUE?

A
Gate 1 is a universal gate.
B
Gate 2 is a universal gate.
C
Gate 3 is a universal gate.
D
None of the gates shown is a universal gate.
4
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+2
-0.6
A three bit pseudo random number generator is shown. Initially the value of output Y = Y2 Y1 Y0 is set to 111. The value of output Y after three clock cycles is GATE ECE 2015 Set 3 Digital Circuits - Sequential Circuits Question 35 English
A
000
B
001
C
010
D
100