Measurement And Instrumentation MCQ Questions & Answers | ECE

A wire strain gauge element subjected to a strain has a gauge factor of 2, a resistance of 125 ohms and is of 1 m length. For a change in length of the wire by 0.005 m, the change in the resistance will be

The following could be the one of the errors in an energy meter

The most useful transducer for displacement sensing with excellent sensitivity, linearity and resolution is

Which of the following is NOT a characteristic of an ideal transducer?

Low pressure is measured using:

A 300 V, 5 A, 0.2 pf low power factor wattmeter is used to measure the power consumed by a load. The wattmeter scale has 150 divisions and the pointer is on the 100^th division. The power consumed by the load (in watts) is:

The principle of working of a D' Arsonval Galvanometer is based upon

The standard for long distance analog signal transmission in process control industry is

Some of the functional building blocks of a measurement system are:
Primary Sensing element (PSE)
Variable conversion Element (VCE) or Transducer
Data Transmission element (DTE)
Variable manipulation Element (VME)
Data Presentation Element (DPE)
The correct sequential connection of a the functional building blocks for an electronic pressure gauge will be:

Consider the following statements regarding sources of error in a Q-meter:
1. If a coil with resistance R is connected in direct measurement mode and if the residual resistance of Q-meter is 0.1 R, then the measured Q of the coil would be 1.1 times the actual Q.
2. If the inductance to be measured is less than 0.1 mH, the error due to presence of residual inductance cannot be neglected.
3. The presence of distributed capacitance in a coil modifies the effective Q of the coil.
Which of the above statements are correct?