Test: Introduction to Electrical & Electronics Measurements - Electrical Engineering (EE) MCQ

A set of independent current measurements were recorded as 10.03, 10.10, 10.08 and 10.11 A, The average range of error is 

Two resistors R₁, and R₂ are connected in series with R₁ = 28.7 Ω and R₂ = 3.624 Ω. The total resistance to the appropriate number of significant figures can be written as

A Wheatstone bridge requires a change of 8 a in the unknown arm of the bridge to produce a change in deflection of 3 mm of the galvanometer. The deflection factor (scale factor) is

A moving coil voltmeter has a uniform scale with 100 divisions, the full scale reading is 200 V and 1/10 of a scale division can be estimated with a fair degree of certainty.The resolution of the instrument in volt is

A multimeter having a sensitivity of 2 kΩ/V is used for the measurement of voltage across a circuit having an output resistance of 10 kΩ. The open circuit voltage of the circuit is 6 volts. The percentage error in multimeter reading when it is set to 10 volt is given by

A 50 V range voltmeter is connected across the terminals X and Y of the circuit shown in figure below. The voltage across the terminals are measured both under open circuit and loaded conditions.

The accuracy in the measurement of voltage across the terminals X and Y in percent is

The number of significant figures in the two resistors having resistances 4 x 10⁶ kΩ and 0.345 kΩ are respectively