When silicon is added in the cast iron 13-17 percent is given an alloy which is
A.Very soft
B.Easily machinable
C.Acid and corrosion resistant
D.It is not possible to have such high percentage of silicon
E.Powder casted
Category: Production Engineering Mcqs
Core prints are
A.made separately in the mould by hand
B.made in the mould be separate pattern
C.attached to pattern
D.none of the above
The advantage of a pneumatically operated control system is
A.It can be used in hazardous atmosphere
B.Simplicity of components
C.Easily maintained
D.Relatively inexpensive
E.All of the above
Steady rest is
A.An additional support provided for long jobs
B.Used while turning unsymmetrical objects
C.Used during thready cutting only
D.Used when a lathe is subject to vibrations
E.Used when a lathe is not provided with foundations
Thermit welding differs from other methods of welding in the following way:
A.It does not use heat
B.It employs exothermal chemical reaction for developing high temperature
C.It is less time consuming
D.It does not require electrodes
E.None of the above
The averge cutting speed for machining mild steel by high speed steel tool is
A.10 m/min
B.20 m/min
C.30 m/min
D.40 m/min
E.50 m/min
Which of the following gears are not used to transmit motion from one shaft to another shaft at an angle to the first?
A.Bevel gears
B.Helical gears
C.Spur gears
D.Herringbone gears
E.Worm gears
The cemented carbide tools are generally poor in
A.Compression
B.Tension
C.Shear
D.Torsion
E.None of the above
When large number of components are turned and parted off from a bar, the chuck used is
A.Three jaw chuck
B.Four jaw chuck
C.Face place
D.Collet chuck
E.Magnetic chuck
Gun metal is an alloy containing
A.Copper, nickel, silver
B.Copper, lead, tin
C.Copper, tin, silver
D.Copper, tin, zinc
E.Copper, zinc, silver
