A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be

Measurement and Instrumentation
A variable w is related to three other variables x, y and z as w = xy/z. The variables are measured with meters of accuracy ± 0.5% reading, ± 1% of full scale value and ± 1.5% reading. The actual readings of the three meters are 80, 20 and 50 with 100 being the full scale value for all three. The maximum uncertainty in the measurement of w will be

± 8%

± 6%

± 7%

± 5%

± 8%

± 6%

± 7%

± 5%

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Measurement and Instrumentation
The rectifier instrument is not free from

Frequency error

Wave shape error

All of the listed here

Temperature error

Frequency error

Wave shape error

All of the listed here

Temperature error

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Measurement and Instrumentation
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

1.5%

0.5%

1.2%

1%

1.5%

0.5%

1.2%

1%

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Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

- 597 W.

+ 795 W.

- 795 W.

+ 597 W.

- 597 W.

+ 795 W.

- 795 W.

+ 597 W.

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Measurement and Instrumentation
It can be stated that

No generalisation can be made with regard to the flux densities in CT and PT

CT operates with considerably lower flux density than a PT

CT operates at almost the same flux density as a PT

CT operates with a higher flux density than PT

No generalisation can be made with regard to the flux densities in CT and PT

CT operates with considerably lower flux density than a PT

CT operates at almost the same flux density as a PT

CT operates with a higher flux density than PT

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Measurement and Instrumentation
The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is

3 mA.

2 mA.

4 mA.

1 mA.

3 mA.

2 mA.

4 mA.

1 mA.

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Measurement and Instrumentation

Measurement and Instrumentation The rectifier instrument is not free from

Measurement and Instrumentation The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

Measurement and Instrumentation A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

Measurement and Instrumentation It can be stated that

Measurement and Instrumentation The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is

Measurement and Instrumentation
The rectifier instrument is not free from

Measurement and Instrumentation
The current ‘I’ through a resistance R is measures with the following uncertainties I = 4 A ± 0.5%, R = 100Ω±0.2%. If power is computed from these two measured quantities, the uncertainty in the power computed will be

Measurement and Instrumentation
A single phase load is connected between R and Y terminals of a 415 V, symmetrical, 3-phase, 4 wire system with phase sequence RYB. A wattmeter is connected in the system as shown in figure. The power factor of the load is 0.8 lagging. The wattmeter will read

Measurement and Instrumentation
It can be stated that

Measurement and Instrumentation
The coil of a moving coil meter has 100 turns, is 40 mm long and 30 mm wide. The control torque is 240×10-6 N-m on full scale. If magnetic flux density is 1Wb/m2 range of meter is