Thermocouples are generally used for accurate temperature measurement upto
A.100?C
B.200?C
C.500?C
D.1000?C
E.1600?C
Category: Production Engineering Mcqs
Which one does not fit with rest in the following?
A.Reamer
B.Pipe cutter
C.Drill
D.Tapping
E.Jaw chuck
In ultrasonic welding the frequency range is generally
A.100 – 4000 cps
B.4000 – 20,000 cps
C.20,000 – 80,000 cps
D.80,000 – 800,000 cps
E.800,000 – 5000,000 cps
Carbon content of grey iron is generally
A.1 – 2 percent
B.2-2.5 percent
C.2.5-3 percent
D.3-3.5 percent
E.4.5 percent
Permeability of a foundry sand is
A.Capacity to hold moisture
B.Porosity to permit the escape of gases
C.Distribution of binder in sand
D.The ability of sand to withstand high temperatures
E.Fineness of sand
True centrifugal casting is used to
A.Cast objects symmetrical about an axis
B.Get accurate castings
C.Get dynamically balanced castings
D.Get statistically balanced castings
E.Get chilled castings
A sprue is
A.A tool used in mould repairing
B.A process of cleaning castings
C.A chemical added to molten materials to get sound castings
D.A vertical passage through the cope and connecting the pouring basin to the runner or gate
E.A special type of non-ferrous core used in centrifugal castings only
When small castings are to be produced in large numbers, the type of pattern generally used is
A.Solid pattern
B.Loose piece pattern
C.Split pattern
D.Sweep pattern
E.Match-plate pattern
Kind of tools used to undercut corners on a job that is to be hardened and ground is
A.Parting tool
B.Roundnose tool
C.Vee shaped tool
D.Knurling tool
E.Form tool
In arc welding as the thickness of the material to be welded increases, the welding current requirement
A.Increases
B.Decreases
C.Does not change
