Choose the correct answer:
1. In tool steel the percentage of silicon is usually restricted to
(A) 0.5 %
(B) 1 %
(C) 0.2 %
(D) 2 %
2. In Grey Cast Iron, free graphite is in the form of
(A) Crystals
(B) Needles
(C) Flakes
(D) Nodules
3. The depth of hardening is affected by
(A) Size of specimen
(B) Hardenability
(C) Quenching medium
(D) All of the above
4. If the structure of a sample consists of pearlite, cementite and free carbon, the specimen may be
(A) Alloy steel
(B) Cast Iron
(C) Dead mild steel
(D) Eutectoid steel
5. A Flapper nozzle is used in
(A) Electronic controller
(B) Hydraulic controller
(C) Pneumatic controller
(D) All of the above
6. A Pirani gauge is used to measure
(A) Pressure up to 10 kg per square centimeter
(B) Pressure up to 100 kg per square centimeter
(C) Very low pressure
(D) All pressures
7. A hot wire anemometer is a variable
(A) Inductance transducer
(B) Resistance transducer
(C) Capacitance transducer
(D) Frequency transducer
8. The draft allowance to be provided on a pattern depends on
(A) The length of the vertical side of the pattern to be extruded
(B) The intricacy of the pattern
(C) The method of molding
(D) All of the above
9. The amount of coal dust added to molding sand depends on
(A) Shape of the casting
(B) Thickness of the casting
(C) Temperature of pouring
(D) None of the above
10. Shell molding is a process in which
(A) A thin shell is cast in the sand mold
(B) A strong core is prepared
(C) A mold comprising a thin shell is produced by mixing dry silica and resin binder
(D) None of the above
11. A fly cutter is used on
(A) Lathe
(B) Shaper
(C) Milling machine
(D) Slotter
12. If a cutting tool is designated as 0-10-6-6-8-75-1,
the side cutting edge angle of the tool in degree will be
(A) 10
(B) 8
(C) 6
(D) 75
13. Shear angle varies with
(A) Workpiece materials and tool geometry
(B) Depth of cut
(C) Feed
(D) Cutting speed
14. Suitable change wheels for cutting 17 T.P.I on 4 T.P.I lead screw lathe are
(A) 10 and 65
(B) 15 and 85
(C) 20 and 85
(D) 30 and 105
15. For joining thin foils, the suitable process will be
(A) Gas welding
(B) MIG welding
(C) Plasma Arc welding(D) Thermit welding
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