4911. The centrifugal casting method, is used for casting articles of
symmetrical shape about vertical axis
symmetrical shape about horizontal axis
irregular shape
non-ferrous metal only
✅ 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.
4912. In axial flow compressor, exit flow angle deviation from the blade angle is a function of
blade camber
blade camber and incidence angle
space-chord ratio
blade camber and space-chord ratio
✅ The correct answer is option B.
4913. The volume of air delivered by the compressor is called
free air delivery
compressor capacity
swept volume
none of these
✅ The correct answer is option B.
4914. The above figure shows the two equal forces at right angles acting at a point. The value of force R acting along their bisector and in opposite direction is
P/2
2P
✅ The correct answer is option C.
4915. The inlet pressure is always __________ the discharge pressure.
equal to
less than
more than
✅ The correct answer is option B.
4916. The specific heat of water is
1.817
2512
4.187
none of these
✅ The correct answer is option C.
4917. If ω/ωn = 2, where co is the frequency of excitation and ωn is the natural frequency of vibrations, then the transmissibility of vibration will the
0.5
1
1.5
2
✅ The correct answer is option B.
4918. The humidity ratio or specific humidity is the mass of water vapour present in
1 m3 of wet air
1 m3 of dry air
1 kg of wet air
1 kg of dry air
✅ The correct answer is option D.
4919. The critical pressure gives the velocity of steam at the throat equal to the velocity of sound.
Agree
Disagree
✅ The correct answer is option A.
4920. The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)
remains constant
decreases
increases
✅ The correct answer is option A.