The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?

Measurement and Instrumentation
The resistance of a circuit is measured from the relation R= P/I2, where P is the power fed into the circuit and I is the current flowing through it. If the limiting errors in the measurement of power and current are respectively ± 1.0% and ± 1.0%, then what will be the limiting error in measurement of resistance ?

±0.5%

± 3.0%

± 1.5%

±3.5%

±0.5%

± 3.0%

± 1.5%

±3.5%

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Measurement and Instrumentation
For the AC bridge circuit shown in figure at balance the value of Rd will be

(Ra/Rc).Rb.

(Rb/Rc).Ra.

(Rc/Ra).Rb.

(Rc/Rb).Ra.

(Ra/Rc).Rb.

(Rb/Rc).Ra.

(Rc/Ra).Rb.

(Rc/Rb).Ra.

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Measurement and Instrumentation
Induction wattmeter can measure

Dc power only

None of the listed here

Both AC and DC

Ac power only

Dc power only

None of the listed here

Both AC and DC

Ac power only

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Measurement and Instrumentation
To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

a circle.

sinisoidal.

an ellipse.

a straight line.

a circle.

sinisoidal.

an ellipse.

a straight line.

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Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

15 V.

10.6 V.

11.1 V.

12.6 V.

15 V.

10.6 V.

11.1 V.

12.6 V.

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Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

0.25 A.

0.67 A.

0.50 A.

0.70 A.

0.25 A.

0.67 A.

0.50 A.

0.70 A.

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Measurement and Instrumentation

Measurement and Instrumentation For the AC bridge circuit shown in figure at balance the value of Rd will be

Measurement and Instrumentation Induction wattmeter can measure

Measurement and Instrumentation To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

Measurement and Instrumentation A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

Measurement and Instrumentation A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be

Measurement and Instrumentation
For the AC bridge circuit shown in figure at balance the value of Rd will be

Measurement and Instrumentation
Induction wattmeter can measure

Measurement and Instrumentation
To the y input of a CRO a signal defined by 10sin100t is applied. To the x input the signal 10cos100t is fed. The gain for both x-channel and y-channel is the same. The screen shows

Measurement and Instrumentation
A sinusoidal signal waveform, when observed on an oscilloscope, has a peak to peak amplitude of 6 cm. If the vertical sensitivity setting is 5 v/cm, then rms value of the voltage will be

Measurement and Instrumentation
A meter has a full-scale deflection of 90o at a current of 1 A. The response of the meter is square law. Assuming spring control, the current for a deflection at 45o will be