Electrical & Electronics Measurements Objective Questions – Set 2

Relative error is same as

The moving coil-meters, damping is provided by

A pressure measurement instrument is calibrated between 10 bar and 260 bar. The scale span of the instrument is

Which following are integrating instruments?

Resolution of an instruments is

The dynometer principle can be for

The use of __________________ instruments is merely confined within laboratories as standardizing instrument.

A null type instrument as compared to a deflected type instrument has

The terminals across the source are ______________________________ if a current source is to be neglected.

In two wattmeter method of power measurement if the total power is measured by one wattmeter only then power factor of the system is

An analog ammeter is

A lissajous pattern, as in figure is observed on the screen of a CRO when voltage of frequencies f_x and f_y are applied to the X and Y plates respectively. Then f_x:f_y is then equal to

A moving coil ammeter has a uniform scale with 50 division and gives a full scale reading 10 A. The instrument can read up to (1/5)th of a scale division with a fair degree of certainty. What is the resolution of the instrument in mA?

Donors to a semiconductor material is

The measured value of a resistance is 10.25 ohm, whereas its value of 10.22 ohm. What is absolute error of the measurement?

In AC circuits, the connection of measuring instruments cause loading effect errors which may effect

The smallest change in measured variable to which instrument will respond is

The resistance in the circuit of the moving coil of a dynamometer wattmeter should be

In measurement system, the function of the signal manipulating elements is to

Example of donor atom is

Purely mechanical instrument cannot be used for dynamic measurements because they have

Systematic errors are

A 0 - 100 V voltmeter has a guaranteed accuracy of 2 % of full scale reading. The voltage measured by the voltmeter is 75 V. The limiting error is in percentage

The scale of hot wire ammeter is

Resolution of an instruments is

Comparison methods are used

Base-10 system is also called as

The errors mainly caused by human mistakes are

If two meters X and Y require 40 mA and 50 mA respectively, to give full scale deflection, then

Deflection method direct measurements are most widely used as. These are