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

What is the instrument used to measure the rate of plant growth with respect to shoot length called?

  1. PAR meter

  2. Auxograph

  3. Hygrometer

  4. Potometer

  5. Lysimeter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The growth in length of the plant is measured with the help of an equipment called auxanometer or auxograph. It is an instrument used for determining and measuring the rate of growth in plants consisting essentially of a lever with a long arm and a short arm which is attached to the plant.

Multiple choice

Which of the following can be measured by a multimeter?

  1. Current, conductivity and wattage

  2. Voltage, wattage and current

  3. Resistance, wattage and voltage

  4. Wattage, conductivity and voltage

  5. Current, voltage and resistance
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

An electric current is a flow of electric charge. Voltage is electric potential energy per unit charge. Resistance is a property of a conductor due to which it opposes the flow of current through it. Option 5 is correct.

Multiple choice

Road roughness is measured using

  1. Benkelman beam

  2. Bump integrator

  3. Dynamic cone penetrometer

  4. Falling weight deflectometer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A bump integrator is a standard device used to measure the roughness of road surfaces.

Multiple choice

Group-I gives a list of devices and Group-II gives the list of uses.

Group-I Group-II
P. Pitot tube 1. Measuring pressure in a pipe
Q. Manometer 2. Measuring velocity of flow in a pipe
R. Venturimeter 3. Measuring air and gas velocity
S. Anemometer 4. Measuring discharge in a pipe

The correct match of Group-I with Group-II is

  1. P - 1, Q - 2, R - 4, S - 3

  2. P - 2, Q - 1, R - 3, S - 4

  3. P - 2, Q - 1, R - 4, S - 3

  4. P - 4, Q - 1, R - 3, S - 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

 

Multiple choice

The flatness of a machine bed can be measured using

  1. Vernier calipers

  2. Auto collimator

  3. Height gauge

  4. Tool maker's microscope
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Auto collimater is used to measure the flatness of the machine bed. Vernier calipers is used to measure the dimensions (dia) of component. Height gauge measures height.

Multiple choice

A ring gage is used to measure

  1. outside diameter but not roundness

  2. roundness but not outside diameter

  3. both outside diameter and roundness

  4. only external threads
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ring gauges are used for gauging the shaft and male components i. e. measure the outside diameter. It does not able to measure the roundness of the given shaft.