Categories

Electrical Engineering Questions and Solutions Set 14

Electrical Engineering Questions and Solutions Set 14
Question:-
Option (A)
    10000 Hz
Option (B)
    100 Hz
Option (C)
    628 Hz
Option (D)
    1592 Hz
Correct Option:
D
Question Solution:
B.W. =
=
= 1591.55 Hz.
Question:-
Option (A)
    3 + j4 Ω
Option (B)
    3 - 4j Ω
Option (C)
    6 Ω
Option (D)
    5 Ω
Correct Option:
D
Question Solution:
For max. power transformation
Zth =
=
=
= 5 Ω
⇒ ZL = 5 Ω.
Question:-
Option (A)
    1.21
Option (B)
    1
Option (C)
    25
Option (D)
    24.01
Correct Option:
B
Question Solution:
Given y = x2
At x = 1
y = 1
at x = 5
y =25
Minimum value of function is 1.
Question:-
Option (A)
    2πi
Option (B)
    -2πi
Option (C)
    4πi
Option (D)
    0
Correct Option:
D
Question Solution:
Poles ⇒ z = -2, circle |z| = 1
no pole lies within circle ⇒ integral = 0