18641. Blanking and piercing operations can be performed simultaneously in a
[A]. simple die
[B]. progressive die
[C]. compound die
[D]. combination die
✅ The correct answer is option C.
Engineering
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18642. The petrol engines are also known as
[A]. spark ignition (S.I.) engines
[B]. compression ignition (C.I.) engines
[C]. steam engines
[D]. none of these
✅ The correct answer is option A.
18643. Brass is an alloy of
[A]. copper and zinc
[B]. copper and tin
[C]. copper, tin and zinc
[D]. none of these
✅ The correct answer is option A.
18644. The critical pressure ratio for initially dry saturated steam is more as compared to initially wet steam.
[A]. Yes
[B]. No
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✅ The correct answer is option B.
18645. The flywheel and the pressure plate bind the clutch disc between them so that the engine and the transmission can be engaged.
[A]. Yes
[B]. No
null
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✅ The correct answer is option A.
18646. Euler’s equation in the differential form for the motion of liquids is given by
[A].
[B].
[C]. ρ.dp + g.dz + v.dv = 0
[D]. ρ.dp – g.dz + v.dv = 0
✅ The correct answer is option A.
18647. String diagram is used
[A]. for checking the relative values of various layouts
[B]. when a group of workers are working at a place
[C]. where processes require the operator to be moved from one work place to another
[D]. all of the above
✅ The correct answer is option D.
18648. A pattern maker’s shrinkage rule considers
[A]. all pattern allowances
[B]. only shrinkage allowance
[C]. all materials to be cast
[D]. all materials of the pattern
✅ The correct answer is option B.
18649. In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p2) will be
[A]. 3.3 bar
[B]. 5.46 bar
[C]. 8.2 bar
[D]. 9.9 bar
✅ The correct answer is option B.
18650. The tolerance produced by shell moulding process of casting is
[A]. +0.05 mm
[B]. ±0.2 mm
[C]. +0.5 mm
[D]. ±1 mm
✅ The correct answer is option B.