Production and Industrial Engineering Question set 6

Production and Industrial Engineering Question set 6
Question:-
Option (A)
Has a low time constant if is provided with a sheath
Option (B)
Has a low time constant when it is bare
Option (C)
Has the same time constant whether it is bare or is provided with sheath
Option (D)
None of the above
Correct Option:
B
Question Solution:
Is the correct answer
Question:-
Option (A)
e2t cos 3t + e2t sin 3t
Option (B)
e2t cos 3t + 2/Ö3 sin 3t
Option (C)
e2t cos 3t + 2/3 sin 3t
Option (D)
e2t cos 3t + (2/3)e2t sin 3t
Correct Option:
D
Question Solution:
L-1 (f(s)) = L-1 {(s-2)+2/(s-2)2+32} = L-1 {(s-2)/(s-2)2+32} + 2/3 L-1 {3/(s-2)2+32}
= e2t cos 3t + 2/3 e2t sin 3t
Hence (D)
Question:-
Option (A)
To start oscillations at power turn ON
Option (B)
For amplitude stabilization
Option (C)
For frequency stabilization
Option (D)
To reduce component drift and to keep the bridge exactly balanced
Correct Option:
D
Question Solution:
is the correct answer. In wein-bridge oscillator, one arm is made of parallel RC circuit & the other arm is of series RC circuit. The other two arms consist of R2 & R2 resistors only. Thus R2 = 2R1. This condition should be satisfied so that bridge remains balanced and also drift is reduced.
Question:-
Option (A)
-Ak
Option (B)
Ak
Option (C)
-Ak-1
Option (D)
Ak-1
Correct Option:
B
Question Solution:
By Cayley Hamilton’s theorem (Matrix A will satisfy its characteristic equations)
I + A + A2 + A3 + ….+ Ak = 0
Þ (Ak+1-I)/(A-I) = 0
Or, Ak+1-I = 0
Or, A,-1, Ak+1 = A-1I,
Þ A-1 = Ak
Question:-
Option (A)
Using extra holes on the voltage coil
Option (B)
Having two holes on opposite sides of the disc
Option (C)
Using a stronger brake magnet
Option (D)
Using steel lamination of high permeability
Correct Option:
B
Question Solution:
is the correct answer
Question:-
Option (A)
One pair of laser beam transmitter – receiver is used.
Option (B)
Two pairs of laser beam transmitter – receiver is used.
Option (C)
Four pairs of laser beam transmitter – receiver is used.
Option (D)
None of these.
Correct Option:
B
Question Solution:
is the correct answer