Arc blow is a welding defect which is encountered
A.In arc welding using a.c. current
B.In arc welding using d.c. current
C.In gas welding
D.In thermit welding
E.In MIG welding
Category: Production Engineering Mcqs
Shear angle varies with
A.Cutting speed
B.Feed
C.Depth of cut
D.Material of tool
E.Work piece materials and tool geometry
The moisture content of moulding sand generally varies from
A.2-8 percent
B.10-25 percent
C.25-40 percent
D.40-50 percent
E.50-65 percent
An important factor to be taken into account while designing a core print is
A.Pattern material
B.Type of mould
C.Moulding sand characteristics
D.Pouring temperature
E.Buoyancy effect of molten material
Which one of the following measuring instruments is supposed to be most accurate?
A.Steel scale
B.Micrometer
C.Vernier caliper
D.Vernier dial gauge
E.Optical projector
Large size bolt heads are made by
A.Hammering
B.Casting
C.Swaging
D.Upset-forging
E.Roll forging
A gold point is
A.The pointed location spot gold plated
B.The pointed on a instrument a reading beyond which may be dangerous to system
C.The temperature at which gold melts
D.The temperature of equilibrium between solid gold and liquid gold at normal atmospheric pressure
E.The temperature of equilibrium between liquid gold and gold vapour at normal atmospheric pressure
Thermistors are
A.Materials highly sensitive to temperature changes
B.Used for measurement of thermal properties
C.Semi-conductor materials having large negative coefficient of resistance
D.Bimetallic strips used in thermometers
E.Clad metals used in accurate measurement of temperature changes
The main constituent of moulding sand is
A.Carbon
B.Graphite
C.Clay
D.Silica
E.Hydrocarbons
Two 3 mm thick MS sheets are to be welded. Electrodes of 16, 12, 10 Nos, are available which one would you choose.
A.16
B.12
C.10
D.Any of the above
E.None of the above
