In the circuit shown in figure, if e1=2V, e2=5V, e3=1V and E=2v,then which of the diodes will be conducting and what will be e0

• D3:1V

• D1:2V

• D2;5V

• D1;5V

Identify the operation of the circuit

• EX-NOR

• NAND

• NOR

• EX-OR

find the equivalent circuit

• 2F

• 5F

• 1.25F

• 0.5F

A dc voltage V is applied at time t = 0 to a series RC circuit. The steady voltage across capacitor is:

• V

• VC/R

• V/(sqrt(R ^ 2 + C ^ 2))

• zero

The number of 4:1 MUX  required to make  64:1 MUX is

• 64

• 20

• 21

•  16

minimum number of NOR gates required to implement A(A+B’)(A+B’C) is equal to

• 0

• 3

• 4

• 7

what is the logic of above circuit

• (A+B)(C+D)(E+F)

• AB+CD+EF

• AB’+CD’+EF’

• (A’+B’)(C’+D’)(E’+F’)

If the input to the digital circuit of the below figure consisting of a cascade of 20 XOR gates is X ,then what is the output Y?

• 0

• 1

• X

• X'

The mux shown in the figure is a 4:1 Multiplexer . the output z is

• 
• 
• 
• 

A full-adder can be implemented with half-adders and OR gate. A 4-bit parallel full adder without any initial carry requires

• 7 half-adders , 3-OR gates

• 8 half-adders , 4-OR gates

• 8 half-adders , 3-OR gates

• 7 half-adders , 4-OR gates