Practice Test: Question Set - 04
1. The teeth of hacksaw blade are bent
- (A) Towards
right
- (B) Towards
left
- (C) Alternately
towards right and left and every third or fourth left straight
- (D) May be bent
in any direction
2. Loam sand is a mixture of
- (A) 30% sand and
70% clay
- (B) 50% sand and
50% clay
- (C) 70% sand and
30% clay
- (D) 90% sand and
10% clay
3. The advantage of Thermit welding is that
- (A) All parts of
the weld section are molten at the same time
- (B) Weld cools
almost uniformly
- (C) Results in a
minimum problem with internal residual stresses
- (D) All of the
above
4. Which one of the following material will require the largest size of riser for the same size of casting?
- (A) Aluminium
- (B) Cast iron
- (C) Steel
- (D) Copper
5. The welding process used in joining mild steel shanks to high speed drills, is
- (A) Spot welding
- (B) Seam welding
- (C) Flash butt
welding
- (D) Upset butt
welding
6. When the molten metal is fed in the cavity of a metallic mould by gravity, the method of casting is known as
- (A) Die casting
method
- (B) Slush
casting method
- (C) Permanent
mould casting method
- (D) Centrifugal
casting method
7. Lancing is the operation of
- (A) Cutting a
sheet of metal in a straight line along the length
- (B) Removal of
metal to the desired shape from the edge of a plate
- (C) Cutting a
sheet of metal through part of its length and then bending the cut portion
- (D) Bending
a sheet of metal along a curved axis
8. The chisel used for cutting key ways is
- (A) Flat chisel
- (B) Cape chisel
- (C) Round nose
chisel
- (D) Diamond
pointed chisel
9. According to Indian standards, the total numbers of tolerance grades are
- (A) 8
- (B) 12
- (C) 18
- (D) 20
10. The metal patterns as compared to wooden patterns require less
- (A) Shrinkage
allowance
- (B) Machining
allowance
- (C) Draft
allowance
- (D) Distortion
allowance
11. In blanking operation, the clearance is provided on
- (A) Punch
- (B) Die
- (C) Half on the
punch and half on the die
- (D) Either
on punch or die depending upon designer's choice
12. For gas welding, the pressure desired at the welding torch for oxygen is
- (A) 7 to 103
kN/m²
- (B) 70 to 280
kN/m²
- (C) 280 to 560
kN/m²
- (D) 560 to 840
kN/m²
13. For gas welding, the pressure desired at the welding torch for acetylene is
- (A) 7 to 103
kN/m²
- (B) 70 to 280
kN/m²
- (C) 280 to 560
kN/m²
- (D) 560 to 840
kN/m²
14. In welding magnesium with TIG arc welding, direct current with ________ is used.
- (A) Straight
polarity
- (B) Reversed
polarity
- (C) Both (A) and
(B)
- (D) None of
these
15. In welding copper alloys with TIG arc welding
- (A) Direct
current with straight polarity is used
- (B) Direct
current with reversed polarity is used
- (C) Alternating
current is used
- (D) Any one of
these
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