For cutting mild steel the cutting angle of a chisel should be
A.55?
B.60?
C.70?
D.75?
E.35?
Category: Production Engineering Mcqs
Specific temperature for the international Prototype metre is
A.Atmospheric
B.Melting point of ice
C.0?C
D.0?F
E.0?K
Spiral flutes are provided on drill bits to
A.Help from the cutting edge of the drill point
B.Curl the chip tightly for easier removal
C.Provide passage for coolant supply
D.All of the above
E.None of the above
In a machining operation on free cutting mild steel the cutting speed is mentioned as 70 m/min. What should be material of cutting tool
A.Carbon steel
B.High speed steel
C.Carbide
D.Diamond
E.Wood
Which of the following statements correct?
A.Rockwell scale B in used for hard metals
B.Rockwell scale C is used for hard metals
C.Rockwell scale C is used for soft metals
D.Rockwell scale A is used for hard metals
In centrifugal castings, the cores are generally made of
A.Green sand and molasses
B.Wax
C.Plastic
D.Plaster of paris
E.Cores are not used
The temperature scanning system are used
A.Where temperature control at a point is important
B.Where temperature difference between two points is important
C.Where system is capable of working without temperature control
D.Where monitoring of a relatively large number of temperatures is needed
E.None of the above
Heating elements for domestic and industrial electrical applications are made of
A.Duralumin
B.Invar
C.Nichrome
D.Babbit metal
E.Delta metal
Noise level in case of an aircraft is
A.Generally less than 100 db
B.Generally more than 100 db
C.Always more than 100 db
D.In the range of 60 – 80 db
E.In the range of 80 – 110 db
For the soldering of galvanized iron the flux used is
A.Hydrochloric acid
B.Zinc oxide
C.Muriatic acid
D.Ammonium chloride
E.None of the above
