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Electrical Engineering Questions and Solutions Set 16

Electrical Engineering Questions and Solutions Set 16
Question:-
Option (A)
    D-1 C-1 A-1
Option (B)
    CDA
Option (C)
    ADC
Option (D)
    Does not necessarily exist
Correct Option:
B
Question Solution:
A, B, C, D is n x n matrix
Given ABCD = I
=> ABCDD-1 = D-1
=> AB = D-1 C-1
=> A-1 AB = A-1 D-1 C-1
=> B = A-1 D-1 C-1
B-1 = (A-1 D-1 C-1 )-1
= (C-1)-1 . (D-1)-1 . (A-1)-1
= CDA
Question:-
Option (A)
    divergence is zero
Option (B)
    gradient is zero
Option (C)
    curl is zero
Option (D)
    none of the above
Correct Option:
A
Question:-
Option (A)
    1/4, 1/2
Option (B)
    1/2, 1/4
Option (C)
    1/2, 1/4
Option (D)
    1, 1/2
Correct Option:
D
Question Solution:
Given P(A) = 1
P(B) =
Both events are independent
So, P(A ∩ B) = P(A) . P(B)
= =
P(A/B) = = = 1
P(B/A) = =
Question:-
Option (A)
    0
Option (B)
    I0
Option (C)
    10 I0
Option (D)
    2 I0
Correct Option:
D
Question Solution:
Itotal =
Itotal =
Itotal = 2 I0