Explore topic-wise MCQs in Electrical Engineering Questions.

Depending on whether the display is a numeric or alphanumeric, the segmental display is

If the reading of the two wattmeters is equal and opposite while measuring power in a 3 phase induction motor then the power factor of the load will be

The devices used for flow obstruction is / are

Conveyor - based method is used for the measurement of the flow of

Instruments are subdivided into active and passive based on whether the output of instrument is produced by the quantity being measured simply changes the magnitude of some external power source. The pressure measuring device and the float - type petrol tank level indicator are example of

Considering cost of instruments, which is better choice, active or passive?

Accuracy of a measuring instrument indicates the

Choose the correct option. I. Repeatability means the closeness of output readings when the same input is applied repetitively over a short period of time, with the same measurement conditions and same instruments. II. Reproducibility means the closeness of output readings for the same input when there are changes in the method of measurement and conditions of measurement

If a pressure gauge of range 0 - 10 bar has a quoted inaccuracy of ±1.0 % of full scale reading, then it means

An instrument with a range of 0 -10 bar is used for measuring pressure. If the expected value of reading is between 0 and 1 bar then the instrument will give

When a voltmeter - ammeter method is applied for the measurement of resistance, the voltmeter reads a value of 8.28 V and the ammeter reading is 4.14 mA. Then the value of the resistance will be

In a hot wire ammeter the current flowing through the resistance of 10 Ω is given by (I = 3 + 2 sin 300 t A) The measured value of current will be

In case of DC supply and AC supply, the torque produced is

The example of low resistance is / are

The commonly used detector(s) in AC bridges is / are

Bridge circuits are used for the measurement of

Low resistance is the resistance of the order of

To read and record a measurement, the indicating type instruments

LVDT which is an instrument for the measurement of displacement, works on the principal of

Suitable method for the reduction of systematic errors is / are

The Wien’s bridges is suitable for the measurement of frequency of the range of

For the measurement of low resistances from few ohms down to one micro ohm, which of the following instrument is not suitable?

The method / methods suitable for the measurement of low resistance is / are

The bridge suitable for the measurement of capacitance is / are

Induction wattmeters can be used with

In L - C connected wattmeter, compensated coil is used. The error in the wattmeter is due to power consumed by the

Power consumption in permanent magnet moving coil instrument and hot - wire instruments are

Commercial accelerometer, which is a second order instruments are generally designed for the damping ratio of the range of

Strain gauge is a

A wattmeter has a pressure coil resistance of 5K ohm and current coil resistance of 0.02 ohm. What load will give equal error with the two connections if the load current is 15 A at a voltage of 240 V and 0.8 power factor.

The transducer used for the measurements is / are

The frequency and supply voltage of induction wattmeters are

The smallest change which can be measured by the transducer of the range of 0 to 150 N force and resolution of 0.1 % of full scale is

A moving coil ammeter requires a potential difference of 0.4 V across it for full scale deflection. It has fixed shunt resistance of 0.01 ohm with a coil circuit resistance of R = 1kohm. The value of shunt required to give full scale deflection when the total current is 10 A is equal to

The sensitivity of Wheatstone bridge is defined as ratio of

If a voltmeter can measure up to 150 V and it has 150 scale divisions where each division can read to ¾ divisions. Then the resolution of the voltmeter is

A voltmeter of 0 to 250 V has an error of ± 1 % of full scale deflection. If the true voltage of voltmeter is 25 V then the range of its reading is

In wattmeters, errors due to stray fields can be removed by

If the control spring of PMMC instrument is replaced by another spring whose spring constant is higher than the previous one, then the damping ratio and natural frequency

If the bombardment of electrons ceases i.e. when the signal becomes zero then the light emitted by the screen will

Range or span of an instrument defines the

In an instrument torque / weight ratio is known as

The AC Bridge used for the measurement of inductance is / are

The dynamometer wattmeters are

A current of 2 + 3sinωt A is passed through a moving iron instrument and through a meter respectively. The readings of the two meters are

A repulsion type moving iron instrument when used with AC circuits, the deflecting torque is

For extending the range of 0 - 150 V to 0 - 500 V in a 10000 Ω / V meter, the value of series resistance required is equal to

Which among the following is not a type of digital voltmeters?

The accuracy in a bridge measurement depends on

The high resistances are found in