Function of gear box is to____________________?

Related Mcqs:

1. Sub zero treatment of steel is done to____________________?

   A. Suppress martensite transformation
   B. Enhance its working performance in sub zero atmosphere
   C. Reduce the retained austenite in hardened steel
   D. Induce temper brittleness after its hardening

2. During decarburising of a plain carbon steel, the thickness of ferrite layer growth is proportional to____________________?

   A. Time
   B. Square root of time
   C. Square of time
   D. Cube of time

3. Uniform ramming of sand in green sand moulding process leads to____________________?

   A. Reduced chance of gas porosity
   B. Greater dimensional stability of the casting
   C. Uniform flow of molten metal into the mould cavity
   D. Less sand expansion type of casting defect

4. Preheating before welding is done to____________________?

   A. Make the plate softer
   B. Burn oil & grease sticking to plate surfaces
   C. Avoid plate distortion
   D. Prevent cold cracks

5. A particle is settling in a liquid under Stokesian conditions. The free falling velocity of the particle is proportional to____________________?

   A. √(Particle diameter)
   B. Particle diameter
   C. (Particle diameter)2
   D. (Particle diameter)3

6. The function of neutral flux used in the pyrometallurgy of metal extraction is to increase the _____________ of the slag ?

   A. Fluidity
   B. Basicity
   C. Acidity
   D. Viscosity

7. The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is__________________?

   A. More
   B. Less
   C. Same
   D. More but less than the diameter of bolt

8. The burnout heat flux in the nucleate boiling regime is not a function of the_________________?

   A. Liquid density
   B. Vapour density
   C. Temperature difference
   D. Heat of evaporation

9. Function of fusible plug in a boiler is to ______________________?

   A. Drain out water and sludge from the boiler during repair
   B. Put off fire in the furnace when water level in the boiler falls to unsafe limit
   C. Guard the boiler in case of abnormal rise in steam pressure
   D. All A, B. & C

10. Volume of blast furnace slag is about _______________ times the volume of hot metal (pig iron) of the same weight ?

    A. 1.5
    B. 3
    C. 5
    D. 7