Which one of the following pair is NOT correctly matched?
Correct Answer:
(D)
Ammeter: Measuring instrument for electric power
Ammeter is an instrument used to measure the electric current (in ampere) not for measuring electric power. The electric current is defined as the flow of electrons. Its SI unit is ampere. Thus, option (d) is not correctly matched.
Ques:
2
What is measured by manometer?
Correct Answer:
(B)
Pressure of gas
Manometer is an instrument that uses a column of liquid to measure pressure of liquids or gases, commonly referred as pressure measuring instrument.
Ques:
3
Which one of the following is NOT correctly matched –
Correct Answer:
(C)
Tacheometer – Pressure difference
A Tacheometer is a type of theodolite used for rapid measurements and determines, electronically or electro- optically, the distance to target and is highly automated in its operations. The remaining pairs are correctly matched. Pyrometer is a device used for measuring relatively high temperature, such as is encountered in furnaces. Anemometer is a device used for measuring wind speed. An Ammeter is a measuring instrument used to measure electric current in a circuit. Electric current is measured in ampere (A).
Ques:
4
The apparatus used to measure intensity of sound is:
Correct Answer:
(D)
Audiometer
An Audiometer is used to measure the intensity of sound, while Anemometer is used for measuring wind speed and wind pressure. Chronometer is a timepiece or timing device with a special mechanism for ensuring and adjusting its accuracy, for use in determining longitude at sea or for any purpose where very exact measurement of time is required. Audiophone is a type of small hearing aid.
Ques:
5
The thermometer which used to measure 2000oC temperature is –
Correct Answer:
(C)
Total radiation pyrometer
Ques:
6
Radar is used for:
Correct Answer:
(C)
Determining the presence and location of objects with radio waves.
RADAR stands for Radio Detection and Ranging. As indicated by the name, it is based on the use of radio waves. It refers to the technique of using radio waves to detect the presence of objects. Today, it is used for a wide variety of applications, such as to determine the range, angle or velocity of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, vehicles, weather formations, and terrain.
Ques:
7
Which one of the following is not correctly matched:
Correct Answer:
(D)
Seismometer - Curvature of surface
Among the given options, option (d) is not correctly matched. Seismometer (with the help of Seismograph) is an instrument used to measure seismic waves generated by earthquakes. Carburetor is a device that blends air and fuel for an internal combustion engine. Cardiograph is an instrument used to record the mechanical movements of the heart. Manometer is an instrument that uses a column of liquid to measure pressure.
Ques:
8
Which one is NOT correctly matched?
Correct Answer:
(D)
Richter scale - Humidity
The Richter scale is not used to measure humidity. In fact, it is used to rate the magnitude of an earthquake, that is the amount of energy released during an earthquake.It was invented in 1935 by Charles F. Richter of the California Institute of Technology as a mathematical device to compose the size of earth- quake.,
Remaining pairs are correctly matched.
Ques:
9
Which of the following is a seismometer device?
Correct Answer:
(B)
Seismograph
Earthquake generates seismic waves which can be detected with a sensitive instrument called Seismograph. Crescograph is a device for measuring growth in plants. It was invented by Sir Jagadish Chandra Bose in the early 20th century. Rain gauge is used to measure rain. Geiger Counter is a 'particle detector' device that detects radioactivity or radiation.
Ques:
10
Which of the following is not a vector quantity?
Correct Answer:
(D)
Volume
The scalar quantity is defined as the quantity that has only got magnitude, but not directions whereas, vector quantity comprises of both magnitude and directions. Displacement, velocity and force are the examples of vector quantity while volume is a scalar quantity.