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- Question
The distillation carried out in such a way that the liquid with the lowest boiling point is first evaporated and recondensed, then the liquid with the next higher boiling point is then evaporated and recondensed, and so on until all the available liquid fuels are separately recovered in the sequence of their boiling points. Such a process is called
Options- A. cracking
- B. carbonisation
- C. fractional distillation
- D. full distillation
- Correct Answer
- fractional distillation
- 1. The neutral axis of a beam is subjected to __________ stress.
Options- A. zero
- B. maximum tensile
- C. minimum tensile
- D. maximum compressive Discuss
- 2. The law of the machine is(where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)
Options- A. P = mW - C
- B. P = m/W + C
- C. P = mW + C
- D. P = C - mW Discuss
- 3. A long delay period in compression ignition engines gives a more rapid rise in pressure which causes knocking.
Options- A. Yes
- B. No Discuss
- 4. A reinforced cement concrete beam is considered to be made of
Options- A. homogeneous material
- B. hetrogeneous material
- C. composite material
- D. isotropic material Discuss
- 5. The function of a crosshead is to guide motion of the __________ and to prevent it from bending.
Options- A. piston rod
- B. connecting rod
- C. eccentric rod
- D. valve rod Discuss
- 6. A diesel engine is __________ as compared to petrol engine, both running at rated load.
Options- A. equally efficient
- B. less efficient
- C. more efficient Discuss
- 7. The temperature rise, between the condenser outlet and expansion valve in ammonia vapour compression system, should be as low as possible.
Options- A. Yes
- B. No Discuss
- 8. Dielectric is used in
Options- A. electro-chemical machining
- B. ultra-sonic machining
- C. electro-discharge machining
- D. laser machining Discuss
- 9. Two beams, one of circular cross-section and the other of square cross-section, have equal areas of cross-sections. When these beams are subjected to bending,
Options- A. both beams are equally economical
- B. square beam is more economical
- C. circular beam is more economical
- D. none of these Discuss
- 10. A fission chain reaction in uranium can be developed
Options- A. by increasing the contents of U235
- B. by slowing down fast neutrons so that U235 fission continues by slow neutron
- C. both (a) and (b)
- D. none of these Discuss
More questions
Correct Answer: zero
Correct Answer: P = mW + C
Correct Answer: Yes
Correct Answer: hetrogeneous material
Correct Answer: piston rod
Correct Answer: more efficient
Correct Answer: Yes
Correct Answer: electro-discharge machining
Correct Answer: square beam is more economical
Correct Answer: both (a) and (b)
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