A solid steel shaft of 100 mm diameter transmits 100 HP at (450/?) r.p.m. The torque in kg-m on the shaft would be
A.250
B.500
C.750
D.1000
E.5000
Category: Mechanical Engineering Mcqs
A grinding wheel is rotating at 3000 rpm. When the switch is turned off the wheel stops in 10 seconds. The uniform deceleration of the wheel was
A.1 rad/s2
B.4 rad/s2
C.10.4 rad/s2
D.31.4 rad/s2
E.62.8 rad/s2
Which fuel has maximum resistance to detonation
A.Toluene
B.Benzene
C.Isoctave
D.n-heptane
E.Alcohol
In case of arc furnaces electric supply for electrodes consists of
A.low voltage and high current
B.high voltage and high current
C.high voltage and low current
D.low voltage and low current
Cetane number of a diesel fuel is a measure of its
A.volatility
B.viscosity
C.ignition quality
D.delay period
A gs which satisfies the Kinetic theory of gases is known as
A.Manoatomic gas
B.Diatomic gas
C.Real gas
D.Perfect gas
E.None of the above
A closed vessel contains air at 1.2 ata and 57?C. The pressure of air in the vessel if the contents of the vessel are cooled to 37?C would be
A.2.327 ata
B.1.2 ata
C.1.127 ata
D.0.563 ata
E.0.073 ata
A cylindrical type cam is one
A.With cylindrical roller follower
B.With cylindrical shape of follower
C.With cricumferential contour cut in the surface of the cylinder which rotates about its axis
D.With circular type motion of follower
E.With disc type cam in which the position of the follower is determined by the radial distance from the cam axis.
In order to avoid interference for 20 pressure and teeth, minimum number of teeth should be
A.8
B.12
C.16
D.More than 18
E.More than 24
1 Torr is equivalent to
A.1 mm Hg
B.13.6 cm of water column
C.760 mm of water
D.760 mm of Hg
E.None of the above
