GATE Mechanical Practice Test
9 Questions
| Total Attempts: 294
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Questions and Answers
- 1.The compression ratio of an SI engine is in the range of
- A.
4 to 6
- B.
6 to 10
- C.
6 to 8
- D.
10 to 14
- 2.The ignition quality of diesel fuel is indicated by
- A.
Octane number
- B.
Cetane number
- C.
Flash point
- D.
Fire point
- 3.When air is adiabatically saturated, the temperature attained is
- A.
Dew point temperature
- B.
Wet bulb temperature
- C.
Dry bulb temperature
- D.
Triple point temperature
- 4.Cast steel is crankshaft is hardened by
- A.
Nitriding
- B.
Normalising
- C.
Carburising
- D.
Induction heating
- 5.The alloying elements mainly used to improve the endurance strength of steel material is
- A.
Nickle
- B.
Vanadium
- C.
Molybdenum
- D.
Tungsten
- 6.The moving mandrel is used in
- A.
Tube drawing
- B.
Wire drawing
- C.
Extrusion
- D.
Spinning
- 7.In metals subjected to cold working, strain hardening effect due to
- A.
Slip mechanism
- B.
Twinning mechanism
- C.
Dislocation mechanism
- D.
Fracture mechanism
- 8.Cold working of metals of metals increases
- A.
Tensile strength
- B.
Hardness
- C.
Yield strength
- D.
All of these
- 9.A streamline and an equipotential line in a flow field
- A.
Are parallel to each other
- B.
Are perpendicular to each other
- C.
Intersect at an acute angle
- D.
Are identical
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