A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

50 W.

100 W.

0 W.

25 W.

50 W.

100 W.

0 W.

25 W.

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Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

1000 rev/KWh.

960 rev/KWh.

3750 rev/KWh.

3600 rev/KWh.

1000 rev/KWh.

960 rev/KWh.

3750 rev/KWh.

3600 rev/KWh.

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

(Rc/Rb).Ra.

(Rb/Rc).Ra.

(Ra/Rc).Rb.

(Rc/Ra).Rb.

(Rc/Rb).Ra.

(Rb/Rc).Ra.

(Ra/Rc).Rb.

(Rc/Ra).Rb.

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Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

One international ohm

One ohm according to working standards

Standard ohm

One ohm according to SI units

One international ohm

One ohm according to working standards

Standard ohm

One ohm according to SI units

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Measurement and Instrumentation
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be

248 V.

260 V.

250 V.

252 V.

248 V.

260 V.

250 V.

252 V.

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Measurement and Instrumentation
Induction wattmeter can measure

Dc power only

Both AC and DC

Ac power only

None of the listed here

Dc power only

Both AC and DC

Ac power only

None of the listed here

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Measurement and Instrumentation

Measurement and Instrumentation A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

Measurement and Instrumentation A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

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

Measurement and Instrumentation The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

Measurement and Instrumentation The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be

Measurement and Instrumentation Induction wattmeter can measure

Measurement and Instrumentation
A sampling wattmeter is used to measure the average power of a load. The peak to peak voltage of a square wave is 10 V and the current is triangular wave of 5 Amp P-P as shown in the figure. The period is 20 ms. The reading in W will be

Measurement and Instrumentation
A DC A-h meter is rated for 15 A, 250 V. The meter constant is 14.4 A-sec/rev. The meter constant at rated voltage may be expressed as

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

Measurement and Instrumentation
The resistance offered to the passage of an in-varying current by a column of mercury at the temperature of melting ice of mass 14.4521 gms of uniform cross-sectional area and length 106.3cm is

Measurement and Instrumentation
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be

Measurement and Instrumentation
Induction wattmeter can measure