4641. The steel produced by bessemer or open hearth process is __________ to that produced by L-D process.
superior
inferior
✅ The correct answer is option B.
Mechanical Engineering
Prepare with the best Mechanical Engineering MCQs with answers and explanations for exams, interviews, and job tests. Our collection covers core topics such as engineering mechanics, thermodynamics, strength of materials, theory of machines, fluid mechanics, heat transfer, manufacturing processes, machine design, and power plant engineering. These Mechanical Engineering multiple-choice questions are designed for students, fresh graduates, and professionals preparing for NTS, PPSC, FPSC, PEC exams, GATE, university entry tests, and recruitment assessments. Strengthen your technical knowledge and problem-solving ability with our updated and comprehensive Mechanical Engineering MCQs.
4642. According to equation of continuity,
w1a1 = w2a2
w1v1 = w2v2
a1v1 = a2v2
a1/v1 = a2/v2
✅ The correct answer is option C.
4643. Two shafts A and B under pure torsion are of identical length and identical weight and are made of the same material. The shaft A is solid and the shaft B is hollow. We can say that
shaft B is better than shaft A
shaft A is better than shaft B
both the shafts are equally good
✅ The correct answer is option A.
4644. In a centrifugal casting method, the impurities are collected in the centre of the casting.
Yes
No
✅ The correct answer is option A.
4645. Circumferential joint in boilers is used to get the required length of a boiler.
TRUE
FALSE
✅ The correct answer is option A.
4646. Larger end cutting edge angle __________ tool life.
increases
decreases
does not effect
✅ The correct answer is option B.
4647. In average work, the tolerance produced by investment casting method is
±0.05 mm
+0.2 mm
+05 mm
+1 mm
✅ The correct answer is option A.
4648. Coefficient of friction is the ratio of the limiting friction to the normal reaction between the two bodies.
Yes
No
✅ The correct answer is option A.
4649. Slip of a reciprocating pump is defined as the
ratio of actual discharge to the theoretical discharge
sum of actual discharge and the theoretical discharge
difference of theoretical discharge and the actual discharge
product of theoretical discharge and the actual discharge
✅ The correct answer is option C.
4650. The main function of intake manifold is that it
promotes the mixture of air and fuel
reduces intake noise
cools the intake air to a suitable temperature
distributes intake air equally to the cylinders
✅ The correct answer is option D.