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Electrical Engineering Questions and Solutions Set 13

Electrical Engineering Questions and Solutions Set 13
Question:-
Option (A)
10000 Hz
Option (B)
100 Hz
Option (C)
628 Hz
Option (D)
1592 Hz
Correct Option:
D
Question Solution:
B.W. = (R/2pL)
= {100 / (2 x p x 10 x 10-3)}
= 1591.55 Hz.
Question:-
Option (A)
`x
Option (B)
y
Option (C)
z
Option (D)
x + y
Correct Option:
C
Question Solution:
`x`yz + yz + xz = z(`x`y + y + x)
= z(`x`y + `(`x`y)) = z
Question:-
Option (A)
pe-k
Option (B)
Option (C)
Option (D)
Correct Option:
B
Question Solution:
F(k) = ¥-¥ f(x) eikx dx
= ¥-¥ e-x2 eikx dx
= ¥-¥ e-x2+ikx dx
=
=
x – (ik/2) = z say
dx = dz
F(k) = e-k2/4 ¥-¥ e-z2 .dz
= e(-k2/4) Öp
Question:-
Option (A)
larger than T1 & T2
Option (B)
smaller that T1 & T2
Option (C)
T1 + T2
Option (D)
T1 – T2
Correct Option:
C
Question:-
Option (A)
0.8165 Vs
Option (B)
0.7797 Vs
Option (C)
0.4502 Vs
Option (D)
0.4714 Vs
Correct Option:
D
Question:-
Option (A)
1
Option (B)
– 1
Option (C)
2
Option (D)
3
Correct Option:
B
Question Solution:

Z21 = (V2/I1)|I2=0
V2 = I1 – 2I
= – I1 (I1 = I)
Z21 = (V2/I1) = -1