tm = (Δt1 – Δt1) loge(Δt1/Δt1)
✅ The correct answer is option A.
Engineering MCQs
The mass of excess air supplied is equal to
x Mass of excess carbon
x Mass of excess oxygen
x Mass of excess carbon
x Mass of excess oxyg
✅ The correct answer is option D.
For welding plates of thickness more than 12.5 mm, its edges
do not require bevelling
should be bevelled to a single-V or U-groove
should have a double-V or U-groove on one side
should have a double-V
✅ The correct answer is option D.
Wet bulb temperature is the temperature of air recorded by a thermometer, when
it is not effected by the moisture present in the air
its bulb is surrounded by a wet cloth exposed to the air
the moisture present in it begins to condense
none of the above
✅ The correct answer is option B.
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l1 and l2 = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)
l1 = kG
l2 = kG
l1l2 = kG
l1l2 = kG2
✅ The correct answer is option D.
Mond gas is obtained by
partial combusion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
carbonisation of bituminous coal
passing steam over incandescent coke
passing air and a larg
✅ The correct answer is option D.
Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
pa = pm/K
pa = pm x K
pa = K/pm
pa = pm + K
✅ The correct answer is option B.
In diesel engines, the ignition takes place due to the heat produced in the engine cylinder at the end of compression.
Correct
Incorrect
✅ The correct answer is option A.
The plain milling machine is more rigid and heavier in construction than a universal milling machine of the same size.
Correct
Incorrect
✅ The correct answer is option A.
One kg of carbon monoxide requires 4/7 kg of oxygen and produces
11/3 kg of carbon dioxide gas
7/3 kg of carbon monoxide gas
11/7 kg of carbon dioxide gas
8/3 kg of carbon monox
✅ The correct answer is option C.