A couple applied to a flywheel of mass 5 kg and of radius of gyration 20 cm produces an angular acceleration of 4 radians/sec2. The torque applied in dyne cm is
A.8 x 104
B.8 x 106
C.8 x 107
D.8 x 108
E.8 x 1010
Category: Mechanical Engineering Mcqs
The adiabatic throttling process
A.is one example of a steady-flow expansion
B.can be performed in a pipe with a restriction
C.of a perfect gas is one of constant enthalpy
D.all of the above
Slip in turning belt is
A.Zero
B.Always restricted to 1 percent
C.Less than 5%
D.Maximum permissible
E.Depends on the belt material
Which one of the following is an angle measuring device?
A.Trammel
B.Hermaphrodite caliper
C.Divider
D.Angle iron
E.Sine bar
Cetane number of a Diesel fuel is measure of
A.Volatility
B.Viscosity
C.A.P.I. specific gravity
D.Ignition quality
E.Delay period
Which of the following can have positive or negative charge?
A.Electron
B.Iron
C.Hole
D.Neutron
E.Isotope
In electrical resistance welding when the current passes through the metal, the greatest resistance is
A.At the surface
B.Through the metals to be welded
C.At the point of contact of the metal to be welded
D.At the point where electrode contacts the metal
E.None of the above
A time switch is
A.A switch which operates for a fixed time only
B.A switch which gets energised with time
C.A 24 hour timing device used to open and close electric circuits according to time of day on a continually repeating schedule
D.A switch with records timings of operation of a circuit
E.None of the above
The castor is called positive when
A.the top of the king pin axis is inclined to the rear of the vehicle
B.the top of the king pin axis is inclined to the front of the vehicle
C.the top of the king pin axis is inclined to the left of the vehicle
D.the top of the king pin axis is inclined to the right of the vehicle
In the regenerative cycle
A.Steam is reheated after expansion and again used
B.Power is generated in two stages
C.Part of the steam is withdrawn from the turbine and is used in heating the steam being supplied to the turbine
D.Part of the steam is withdrawn from the turbine and is used in heating the feed water
E.Part of the steam is withdrawn from the turbine and is utilised in heating the exhaust steam
