Physics · General Awareness

Physics Measuring Instruments

1,123 Questions

Physics measuring instruments are essential tools used to measure various physical quantities. This topic covers devices like hygrometers, oscilloscopes, and sphygmomanometers. It is a highly scoring section in general science and general awareness examinations.

Pressure and humidity instrumentsElectrical measuring devicesMedical physics toolsNavigational instruments

Physics Measuring Instruments Questions

Multiple choice

Least count is

  1. least measurement that a measuring instrument can measure

  2. maximum measurement that a measuring instrument can measure

  3. difference of maximum and minimum measurement that a measuring instrument can measure

  4. sum of maximum and minimum measurements that a measuring instrument can measure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The least count is defined as the smallest value that can be measured accurately by a measuring instrument. It represents the resolution of the device.

Multiple choice

Plug gauge is used for ______.

  1. checking hole size

  2. checking overtly

  3. fitting size

  4. taper checking
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A plug gauge is a precision inspection tool used to check the diameter and tolerance of a hole. It consists of a 'go' end and a 'no-go' end.

Multiple choice

Vernier height gauge is used to measure _______.

  1. height of the job

  2. marking on the job

  3. to measure all dimensions of the job

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A Vernier height gauge is a measuring instrument used to determine the vertical height of an object from a reference surface. It is not designed for general marking or measuring all types of dimensions.

Multiple choice

In order to measure pressure, what is used?

  1. Barometer

  2. Lactometer

  3. Voltmeter

  4. Viscometer
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A barometer is a scientific instrument used to measure atmospheric pressure. Lactometers measure milk purity, and voltmeters measure electrical potential.

Multiple choice

Gyroscope is the instrument used as a stabilizer in

  1. car

  2. ship

  3. airplane

  4. jet

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A gyroscope is a device used for measuring or maintaining orientation and angular velocity. It is widely used in ships and aircraft to provide stability and navigation assistance.

Multiple choice

A voltmeter has?

  1. High resistance

  2. Very low resistance

  3. No resistance

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A voltmeter is designed to measure potential difference across a component, so it must have very high resistance to prevent drawing current from the circuit.

Multiple choice

The electrical potential difference is measured by

  1. ammeter

  2. potentiometer

  3. galvanometer

  4. voltmeter
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A voltmeter is specifically designed to measure the potential difference between two points in an electrical circuit. Ammeters measure current, while galvanometers detect small currents.

Multiple choice

An ammeter has?

  1. High resistance

  2. Very low resistance

  3. No resistance

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An ideal ammeter has zero resistance to avoid affecting the current in the circuit. In practice, an ammeter is designed to have very low resistance.