EXAMIANS
A 1 mA meter is to be converted to 1 A ammeter. The meter resistance is 100 Ω. The value of shunt resistance
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Ratio of readings of two wattmeter connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is
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A wheatstone bridge cannot be used for precision measurements because errors are introduced into on account of
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Following is a 16-bit register for 8085 microprocessor
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The inductance of a certain moving iron ammeter is expressed as L = 2+5θ-θ2 µH. The control spring torque is 2 × 10-6 Nm/radian. Find the deflection in radians for a current of 2A.
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A potentiometer may be used for
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The internal resistance of an ammeter should be
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A moving coil permanent magnet instrument can be used as ______ by using a low resistance shunt.
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The three resistors R1, R2 and R3 have the following ratings: R1 = 25Ω ± 4%, R2 = 65 Ω ± 4%; R3 =45 Ω ± 4%. If the resistance are connected in series, then limiting error produced in equivalent resistance is
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Purely mechanical instrument cannot be used for dynamic measurements because they have
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