Question – 1
1. A hoist can be used for _________.
- A. cutting plastic
- B. lifting objects
- C. melting iron bars
- D. making machineries
- Answer:B
- Answer Explanation:
Question – 2
2. Water can be transferred between two adjacent swimming pools by using a _________.
- A. piston
- B. pulley
- C. siphon
- D. hoist
- Answer:C
- Answer Explanation:
Question – 3
3. Liquid fuels have ________ solid fuels.
- A. higher calorific value than
- B. lower calorific value than
- C. same calorific value as
- D. no calorific value as
- Answer:A
- Answer Explanation:
Question – 4
4. __________ can be measured using an aneroid barometer.
- A. Temperature
- B. Atmospheric pressure
- C. Viscosity
- D. Weight
- Answer:B
- Answer Explanation:
Question – 5
5. Which of the following mechanical devices help in measuring the level of water in a tank?
- A. Switch
- B. Galvanometer
- C. Float
- D. Valve
- Answer:C
- Answer Explanation:
Question – 6
6. A micrometer is used to measure
- A. microscopic objects
- B. very small but not microscopic objects
- C. large objects
- D. objects of all sizes
- Answer:B
- Answer Explanation:
Question – 7
7. At normal temperature, the surface tension of water is __________ the surface tension of mercury.
- A. less than
- B. more than
- C. equal to
- D. varies depending on the quantity
- Answer:A
- Answer Explanation:
Question – 8
8. _________ force is produced when objects are rubbed.
- A. Frictional
- B. Gravitational
- C. Centripetal
- D. Centrifugal
- Answer:A
- Answer Explanation:
Question – 9
9. Torsion spring coil and uncoil produces a _________.
- A. direct pull
- B. twisting action
- C. magnetic field
- D. none of the above
- Answer:B
- Answer Explanation:
Question – 10
10. If two gears are of different sizes, they can mesh properly only if their teeth are _______.
- A. of the same size
- B. of different sizes
- C. blunt edges
- D. sharp edges
- Answer:A
- Answer Explanation:
Question – 11
11. ________ threads can be used in cases where power is transmitted in only one direction.
- A. Square
- B. Angle
- C. Buttress
- D. Acme
- Answer:C
- Answer Explanation:
Question – 12
12. When a material is heated, its toughness ________.
- A. decreases
- B. increases
- C. remains constant
- D. increases or decreases depending on the thickness of the material
- Answer:A
- Answer Explanation:
Question – 13
13. In a ________ bearing the length and diameter of the journal are equal.
- A. long
- B. square
- C. triangle
- D. short
- Answer:B
- Answer Explanation:
Question – 14
14. _________ energy is stored in hydraulic accumulator so that the stored energy can be supplied to a machine when required.
- A. Potential
- B. Kinetic
- C. Kinematic
- D. Pressure
- Answer:D
- Answer Explanation:
Question – 15
15. In gas turbines, _________ type rotary compressor is used.
- A. centripetal
- B. centrifugal
- C. axial flow
- D. radial flow
- Answer:C
- Answer Explanation: