You Are On Question Answer Bank SET 2006

### 100301. The unit used to measure radio activity?

Answer: Becquerel

Answer: Hertz

### 100303. The power of the Engine is calculated by?

Answer: Horse Power (One Horse Power = 746 watt)

Answer: Farad

Answer: Henry

### 100306. The unit of atmospheric pressure?

Answer: Bar (One Bar=76cm of Hg)

Answer: Newton

### 100308. Unit of Electric resistance?

Answer: Ohm What is the use of Barometer?

### 100309. The unit which is used to calculate the distance between the Galaxy?

Answer: parsec (Parallactic second)

### 100310. The largest unit of distance?

Answer: parsec (1parsec= 3×1013km)

Answer: Watt

Answer: Kelvin

Answer: Candela

Answer: Angstrom

### 100315. The unit used to measure the depth of the sea is?

Answer: Fathom One fathom = 6 feet

### 100316. The unit of distance in astronomy is?

Answer: Light year

Answer: Dioptre

Answer: Dynamo

### 100319. Which instrument converts light energy into electric energy?

Answer: Photo electric cell

### 100320. Which instrument used to convert A.C. current to D.C. current?

Answer: Rectifier

### 100321. Which is the instrument employed to change the voltage in an electric circuit?

Answer: Transformer

### 100322. What is the use of Altimeter?

Answer: To measure the altitude

### 100323. What is the use of Ammeter?

Answer: To measure the flow of electric current in a circuit

### 100324. What is the use of Anemometer?

Answer: To measure the force or speed of the wind

### 100325. What is the use of Electroscope?

Answer: To measure the electrostatic charge

### 100326. What is the use of Calorimeter?

Answer: To measure the amount of heat

### 100327. What is the use of Speedometer?

Answer: To indicate the speed of a vehicle

### 100328. What is the use of Fathometer?

Answer: To measure the depth of water (1 fathom = 6 ft)

### 100329. What is the use of Periscope?

Answer: To observe objects of the surface from the submarine

### 100330. What is the purpose of Mariner’s compass?

Answer: To find out the direction of the ship in the sea

### 100331. What is the use of Steroscope?

Answer: To see the photos taken by two cameras placed at two different angles

### 100332. What is the use of Hygrometer?

Answer: To measure the humidity of atmosphere.

### 100333. What is the use of Galvanometer?

Answer: To measure electric currents

### 100334. What is the use of Microscope?

Answer: To magnify tiny objects

### 100335. What is Lactometer?

Answer: device used to measure the relative density of milk to determine its purity

Answer: Radar

### 100337. What is Pyrometer?

Answer: Used to record high temperature from a great distance

### 100338. What is Hydrophone?

Answer: It is used for recording of sound inside water

### 100339. What is an electric oscillator?

Answer: It converts Direct Current into Alternating Current

### 100340. What is cyclotron?

Answer: It is a device for producing high energy sub-atomic particles

### 100341. What is Geiger - Muller counter?

Answer: It is used for detecting and measuring radio active radiation

### 100342. What is a nuclear reactor?

Answer: It is the Central component of a nuclear power station; which generates nuclear energy under controlled conditions. What is the use of Microphone?

### 100343. What is a hydrometer?

Answer: It is used for measuring the density of liquids directly.

### 100344. What is venturimeter?

Answer: It is used for measuring flow of liquids

### 100345. What is Radar?

Answer: Radar is Radio Detection and Ranging

Answer: Work

Answer: Energy

### 100348. Rate of doing work is called?

Answer: Power 1 horse power = 746 watt

### 100349. Energy by virtue of which a body can do mechanical work is called?

Answer: Mechanical Energy

### 100350. Which are the two forms of mechanical energy?

Answer: Kinetic energy & Potential energy
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