926. Source of heat supply in a cupola is
A. Coke
B. Charcoal
C. Lumpy coal
D. Pulverised coal
✅ The correct answer is option A.
929. Boiler draught of 10 mm water column is equivalent to
A. 1 kgf/m²
B. 10 kgf/m²
C. 10 kgf/mm²
D. 1 kgf/mm²
✅ The correct answer is option B.
932. Addition of __________ to steel can not impart it high strength at elevated temperature.
A. Nickel
B. Magnesium
C. Silicon
D. Manganese
✅ The correct answer is option B.
935. Titanium alloys are welded using the Following process:
A. TIG welding
B. Submerged arc welding
C. Butt welding
D. Electron beam welding
✅ The correct answer is option A.
898. Scab is a defect developed during __________ of metals.
A. Forging
B. Sand casting
C. Machining
D. Welding
✅ The correct answer is option B.
901. A fluid is termed as the Newtonion fluid, when the shear stress is __________ the velocity gradient.
A. Independent of
B. Inversely proportional to
C. Directly proportional to
D. None of these
✅ The correct answer is option C.
904. The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.
A. Ambient
B. Dry bulb
C. Dew point
D. Wet bulb
✅ The correct answer is option C.
907. The hardenability of steel decreases with
A. Decrease in dislocation density
B. Increase in solutionising temperature
C. Increase in strength
D. Decrease in grain size
✅ The correct answer is option D.
864. Gage pressure within a spherical droplet of a fluid is ‘p’. What will be gage pressure within a bubble of the same size & of the same fluid ?
A. p
B. 2 p
C. 0.5 p
D. 0.25 p
✅ The correct answer is option B.
867. Dialysis is the process of separating substances in the
A. Colloidal state from those present in the true solutions
B. Colloidal state from those present in the suspensions
C. Suspension from those present in the solutions
D. None of these
✅ The correct answer is option A.