Electrical Engg (EEE) - MCQ Practice Questions

Which of the following is the SI unit of electric current?

A moving coil galvanometer has a coil resistance of 10 Ω and gives full-scale deflection for 5 mA current. What shunt resistance is required to convert it into an ammeter of range 0-5 A?

The accuracy of an electrical measuring instrument is expressed as a percentage of:

A voltmeter has an internal resistance of 100 kΩ and shows a reading of 50 V across a 1 MΩ resistor. What is the true voltage across the resistor?

Which bridge circuit is most suitable for measuring an unknown capacitance?

The error in an ammeter connected in series with a circuit is primarily due to:

In a Wheat stone bridge, the null deflection is obtained when the ratio of resistances satisfies which condition?

A moving iron instrument reads the same for both AC and DC because it:

The class of accuracy for a class 1.5 instrument means:

A thermocouple is used to measure temperature because it:

For accurate power measurement in a three-phase system with unbalanced load, the minimum number of wattmeters required is:

The mutual inductance between two coils is independent of:

A platinum resistance thermometer (RTD) follows which relationship between resistance and temperature?

The input impedance of a digital multimeter is typically:

In a CRO (Cathode Ray Oscilloscope), the Y-deflection sensitivity is expressed in:

A Hall effect sensor is primarily used to measure:

The power factor of a circuit can be improved by adding:

The sensitivity of a galvanometer is defined as:

In an AC bridge at balance condition, if R₁ = 100 Ω, R₂ = 50 Ω, and R₃ (inductive) = 200 Ω with series R, then R₄ is:

The null deflection method in bridge circuits is preferred over deflection method because it: