MEASUREMENT AND INSTRUMENTATION QUIZ

Consider the following statements : In a measuring instrument, 1. Linearity is more important than sensitivity. 2. High precision indicates high accuracy 3. Accuracy cannot be better than resolution. Of these statements

1, 2 and 3 are correct

1 and 3 are correct

1 and 2 are correct

2 and 3 are correct

TRUE ANSWER : ?
YOUR ANSWER : ?

Induction type single phase energy meters measure electric energy in

VAR

kWh

Wh

kW

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following devices may be used for extending the range of instruments?

All of the listed here

Shunt

Current transformers

Potential transformers

TRUE ANSWER : ?
YOUR ANSWER : ?

The pressure coil of a wattmeter should be connected on the supply side of the current coil when

Supply voltage is low

Load impedance is high

Load impedance is low

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

X is more sensitive.

It would not be possible to assess the sensitivity on the basis of the given data.

Y is more sensitive.

Both X and Y are equally sensitive.

TRUE ANSWER : ?
YOUR ANSWER : ?

An instrument to be used for measurement and control should preferably have

Linear output and fast response

Dead zone and dead time

A highly damped response

Non-linear output

TRUE ANSWER : ?
YOUR ANSWER : ?

What are the SI units of mass, length and time respectively?

kg, cm and s.

kg, m and s.

g, cm and s.

g, m and s.

TRUE ANSWER : ?
YOUR ANSWER : ?

The thermocouple instruments do not have

Absence of frequency error

High sensitivity

Independence of ambient temperature

High degree of measuring accuracy

TRUE ANSWER : ?
YOUR ANSWER : ?

A rectifier type instrument is connected to 100VDC and is operated in the DC measuring module reads

100V

111V

50V

90V

TRUE ANSWER : ?
YOUR ANSWER : ?

A spring-controlled moving iron voltmeter draws a current of 1 mA for full scale value of 100V. If it draws a current of 0.5 mA, the meter reading is

100 V.

200 V.

25 V.

50 V.

TRUE ANSWER : ?
YOUR ANSWER : ?

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