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Measurement and Instrumentation

Measurement and Instrumentation
Question:-
Option (A)
Both A and R are true and R is the correct explanation of A
Option (B)
Both A and R are true but R is not the correct explanation A
Option (C)
A is true but R is false
Option (D)
A is false but R is true
Correct Option:
A
Question Solution:
The magnetic pattern impressed upon the tape is directly proportional to the flux density produced at the air gap. The relationship between current in the winding and the flux density in the gap is non-linear. This non-linearity produces a distortion in the signal applied to the tape. In order to avoid distortion, a high frequency bias of constant amplitude is applied with the signal input to the recorder. Both the amplitude and frequency of the bias is larger than the maximum amplitude and highest frequency contained in the input signal. The bias freq. is usually four times the highest signal freq. The bias current & the exact value depends on the tape and head characteristics
Question:-
Option (A)
Both A and R are true and R is the correct explanation of A
Option (B)
Both A and R are true but R is not the correct explanation A
Option (C)
A is true but R is false
Option (D)
A is false but R is true
Correct Option:
A
Question Solution:
Gray code is used for overcoming the inherent disadvantages of a natural binary code as explained in the reason (R)
Question:-
Option (A)
Sensitivity can not be judged with given information
Option (B)
Both are equally sensitive
Option (C)
X is more sensitive
Option (D)
Y is more sensitive
Correct Option:
C
Question Solution:
Refer static sensitivity
Question:-
Option (A)
1, 3, 2
Option (B)
1, 2, 3
Option (C)
3, 1, 2
Option (D)
2, 1, 3
Correct Option:
C
Question Solution:
Induction principle is more generally used for watt-hour meters than for ammeters and voltmeters owing to their comparatively high cost, and inaccuracy of induction instruments of the latter types
Question:-
Option (A)
(400 ± 3)A
Option (B)
(400 ± 2.24)A
Option (C)
(400 ± 1/5)A
Option (D)
(400 ± 1)A
Correct Option:
B
Question Solution: