ECE - Questions and solutions set-5

Electronics and communication Engineering Questions and solutions set-5
Question:-
Option (A)
x y z
Option (B)
x Å y Å z
Option (C)
x + y + z
Option (D)
`x+`y+z
Correct Option:
D
Question Solution:
    __    _   _
f = xy + xy + xy + xyz
               _   _
By K – Map f = x + y + z
Question:-
Option (A)
4 f0
Option (B)
6 f0
Option (C)
10 f0
Option (D)
12 f0
Correct Option:
A
Question Solution:
FL = 4 f0
Fu = 6 f0
Fd = 2 f0
so here k=fu/fd=3
fs = 2fu/k= 2.(6f0/3)=4f0
Question:-
Option (A)
1.36 volt
Option (B)
3.5 volt
Option (C)
2.5 volt
Option (D)
2.8 volt
Correct Option:
A
Question Solution:
IC = ((VCC - VCE) / RC)) = 1 mA
\ 10-VCE = 6.8 Þ VCE = 3.2 volt
(v0/vi) = ((VCC-VCE) / VT) = ((10-3.2) / VT) = (v0/5mv)
So , v0 = ((6.8 x 5) /25) = 1.36 volt
Question:-
Option (A)
Linear, Time invariant and Non-Causal
Option (B)
Linear, Time variant and Non-Causal
Option (C)
Non linear, time invariant & Causal
Option (D)
Non linear, time variant & Non-causal
Correct Option:
B
Question:-
Option (A)
11100111
Option (B)
11100100
Option (C)
11010111
Option (D)
11011011
Correct Option:
A
Question Solution:
Just Find the values in 2’s complement representation.