18611. The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
[A]. remains the same
[B]. increases
[C]. decreases
[D]. is unpredictable
✅ The correct answer is option C.
Engineering
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18612. Which of the following statement is incorrect?
[A]. The liquid fuels consist of hydrocarbons.
[B]. The liquid fuels have higher calorific value than solid fuels.
[C]. The solid fuels have higher calorific value than liquid fuels.
[D]. A good fuel should have low ignition point.
✅ The correct answer is option C.
18613. The chisel used for cutting key ways is
[A]. flat chisel
[B]. cape chisel
[C]. round nose chisel
[D]. diamond pointed chisel
✅ The correct answer is option B.
18614. In a four high rolling mill, there are four rolls out of which
[A]. one is working roll and three are backing up rolls
[B]. two are working rolls and two are backing up rolls
[C]. three are working rolls and one is backing up roll
[D]. all of the four are working rolls
✅ The correct answer is option B.
18615. In a unit type body (frameless body) design, the sheet metal parts are welded together, forming a frame work to which outer skin is attached.
[A]. True
[B]. False
null
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✅ The correct answer is option A.
18616. When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
[A]. zero
[B]. 1/5
[C]. 4/5
[D]. 1
✅ The correct answer is option A.
18617. A fixture does not guide the tool.
[A]. Correct
[B]. Incorrect
null
null
✅ The correct answer is option A.
18618. The pair is known as a higher pair, when the relative motion between the elements of a pair is
[A]. turning only
[B]. sliding only
[C]. rolling only
[D]. partly turning and partly sliding
✅ The correct answer is option D.
18619. The property of a material due to which it breaks with little permanent distortion, is called
[A]. brittleness
[B]. ductility
[C]. malleability
[D]. plasticity
✅ The correct answer is option A.
18620. When a bar is cooled to – 5°C, it will develop
[A]. no stress
[B]. shear stress
[C]. tensile stress
[D]. compressive stress
✅ The correct answer is option C.