56%
63%
74%
78%
✅ The correct answer is option B.
Mechanical Engineering MCQs
In a reaction turbine, the pressure head of water, while flowing over the vanes, is converted into kinetic head before leaving the wheel.
Agree
Disagree
✅ The correct answer is option B.
The energy released during the fission of one atom of Uranium – 235 in million electron volts is about
100
200
300
400
✅ The correct answer is option B.
The efficiency of a jet engine is higher at
low speeds
high speeds
low altitudes
high altitudes
✅ The correct answer is option D.
Thermal conductivity of water __________ with rise in temperature.
remains same
decreases
increases
may increase or decrease depending upon temperature
✅ The correct answer is option D.
A series of operations, which takes place in a certain order and restore the initial conditions at the end, is known as
reversible cycle
irreversible cycle
thermodynamic cycle
none of these
✅ The correct answer is option C.
Cast iron during machining produces
continuous chips
discontinuous chips
continuous chips with built-up-edge
none of these
✅ The correct answer is option B.
The optimum effective temperature for human comfort is
higher in winter than in summer
lower in winter than in summer
same in winter and summer
not dependent on season
✅ The correct answer is option B.
If a number of forces are acting at a point, theirresultant will be inclined at an angle θ with the horizontal, such that
tan θ = ∑H/∑V
tan θ = ∑V/∑H
tan θ = ∑Vx∑H
✅ The correct answer is option B.