Explore topic-wise MCQs in Electrical Engineering Questions.

The example of low resistance is/are

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

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

Q meter is used to measure the properties of

To read and record a measurement, the indicating type instrument

Accuracy of an measuring instrument indicates the

The output of an analogue instrument varies

If the impedance of the instrument measuring the output voltage of the bridge circuit is less than the component resistance then

Megger is a portable instrument. It is used for the measurement of

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

In a gravity controlled type indicating instrument, the current flowing through the circuit is

Low accuracy measurements from a high precision instrument are normally caused by

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

A voltmeter connected across a resistor gives a value of 65 V but the expected value of resistor was 68 V. Then the absolute error and the relative accuracy of the measurement will be

Precision of an instrument is defined as

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 high precision implies

For an instrument the degree of repeatability or reproducibility in measurements is an alternative way of expressing its

Which of the following statements are correct 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.

The microcomputer performs its computations in

Range or span of an instrument defines

In deadweight gauge, weights are added on the top of piston until the piston reaches a datum level. The datum level is known as

Four observers recorded a set of current measurement as: 125.09 mA, 125.21 mA, 125.05 mA, 125.14 mA. The range or span of error will be

The accuracy of the deflection type instruments and of the null type instruments depends on

In terms of usage, deflection type instruments are

X-Y recorders is the type of

The different types of analog recorders are

An electrolytic ampere hour meter can be converted into watt-hour meter by

In a measuring instrument, dead space is defined as the

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

The measurements which can be simplifies by using X-Y recorders is /are

The difference between the measured value and the true value is known as

In bridge circuit, the impedance of the instrument measuring the output voltage must be

The process of measurement

In the systematic errors, the errors in the output of the measurement system are

Systematic errors in a measurement system are caused by

The output reading of an instrument is

A speedometer typically has a threshold of about 15 km/hr. If the car starts from rest and accelerates, the speedometer will

The non coincidence between loading and unloading curves is known as

The sensitivity of a measurement is a measure of

In an instrument torque/weight ratio is known as

Calibration of instrument is an important consideration in measurement system. The errors due to instruments being out of calibration can be rectified by

If one meter A requires 80 mA to give full scale deflection and another meter B requires 60 mA to give full scale deflection, then the

The sensitivity drift is also known as scale factor drift defines the amount by which an instruments sensitivity of measurement varies as ambient conditions change. It is measured in units of

To produce a change in deflection of 1.5 mm of the galvanometer of Wheatstone bridge, a change of 5Ω in the unknown arm of bridge is required. The sensitivity is

Can an instrument suffer both zero drift and sensitivity drift at the same time?

Hysteresis most commonly occurs in instruments that contains

Random errors in a measurement system are due to

The error between mean of finite data set and mean of infinite data set is known as

If an instruments exhibits hysteresis then