Discussion
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- Question
It is desired to condition the outside air from 70% relative humidity and 45° C dry bulb temperature to 50% relative humidity and 25° C dry bulb temperature (room condition). The practical arrangement will be
Options- A. dehumidification
- B. cooling and humidification
- C. cooling and dehumidification
- D. dehumidification and pure sensible cooling
- Correct Answer
- cooling and dehumidification
- 1. The cold working of metals is carried out
Options- A. at the recrystallisation temperature
- B. below the recrystallisation temperature
- C. above the recrystallisation temperature
- D. at any temperature Discuss
- 2. Chromium when added to steel __________ the tensile strength.
Options- A. does not effect
- B. decreases
- C. increases Discuss
- 3. The electron beam welding can be carried out in
Options- A. open air
- B. a shielded gas environment
- C. vacuum
- D. a pressurised inert gas chamber Discuss
- 4. In a pressure enthalpy chart, the space between the saturated liquid line and saturated vapour line, represents sub-cooled liquid region.
Options- A. True
- B. False Discuss
- 5. Otto cycle is also known as
Options- A. constant pressure cycle
- B. constant volume cycle
- C. constant temperature cycle
- D. constant temperature and pressure cycle Discuss
- 6. If the resultant of a number of forces acting on a body is zero, then the body will not be in equilibrium.
Options- A. Yes
- B. No Discuss
- 7. The operation of cutting of a flat sheet to the desired shape is called
Options- A. shearing
- B. piercing
- C. punching
- D. blanking Discuss
- 8. When shear force at a point is zero, then bending moment is __________ at that point.
Options- A. zero
- B. minimum
- C. maximum
- D. infinity Discuss
- 9. When a body is subjected to a direct tensile stress (?) in one plane, then normal stress on an oblique section of the body inclined at an angle ? to the normal of the section is
Options- A. ? cos ?
- B. ? cos2 ?
- C. ? sin ?
- D. ? sin2 ? Discuss
- 10. The brake power is the power available
Options- A. in the engine cylinder
- B. at the crank shaft
- C. at the crank pin
- D. none of these Discuss
More questions
Correct Answer: below the recrystallisation temperature
Correct Answer: increases
Correct Answer: vacuum
Correct Answer: False
Correct Answer: constant volume cycle
Correct Answer: No
Correct Answer: shearing
Correct Answer: maximum
Correct Answer: ? cos2 ?
Correct Answer: at the crank shaft
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