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Measurement and Instrumentation

Measurement and Instrumentation
Question:-
Option (A)


A B C D
2 1 4 3

Option (B)


A B C D
3 4 1 2

Option (C)


A B C D
2 4 1 3

Option (D)


A B C D
3 1 4 2

Correct Option:
A
Question Solution:
. Twin-YT network is used in notch filter for realizing frequency selection
. Wagner earthling device removes all the earth capacitances from the bridge network
Question:-
Option (A)
Lower frequency of resonance & lower amplitude of vibration
Option (B)
Lower frequency of resonance but the amplitude of vibration is unchanged
Option (C)
Higher frequency of resonance & lower amplitude of vibration
Option (D)
Higher frequency of resonance but the amplitude of vibration is unchanged
Correct Option:
A
Question Solution:
Bigger size mirror results in increased inertia constant J

as J increases both fn & A decrease
Question:-
Option (A)
1, 2 and 3
Option (B)
1 and 2
Option (C)
2 and 3
Option (D)
1 and 3
Correct Option:
B
Question Solution:
Moving iron is not placed in a field of a permanent magnet. Moving iron instrument employs an such a way so as to increase the flux of the electromagnet
Question:-
Option (A)
The storage target is a conductive mesh covered area with magnesium fluoride
Option (B)
Secondary emission electrons fetch a positively changed pattern
Option (C)
The flood guns used for display, emit high velocity electrons
Option (D)
The flood guns are placed between the deflection plates and storage target.
Correct Option:
C
Question Solution:
Refer Analog storage oscilloscope (variable persistence storage type)
Question:-
Option (A)
5/3 for X and 3/2 for Y
Option (B)
3/2 for X and 5/3 for Y
Option (C)
5/3 for X and 5/3 for Y
Option (D)
3/2 for X and 3/2 for Y
Correct Option:
D
Question Solution:
For(X); (fy/fx) = (3/2) and for (Y); (fy/fx)= {(1+1/2)/1} = (3/2)