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Q1— Section header —
Q1— Section header —
1.1.1False
1.1.2True
1.1.3True
1.1.4False
1.1.55
Q2— Section header —
2.1Radial misalignment [6]6
Q3— Section header —
3.1Standardisation and the interchangeability of parts are facilitated. Faulty machining and workmanship are accepted within certain limits. Production is accelerated. with a similar part manufactured from the same drawing
Q4— Section header —
4.1.1he ability of the material to resist galling or seizing under poor lubrication conditions
4.1.2The ability of the mate rial to flow during the running in process
4.1.3
4.2Oil enters the bearing through an oil hole. The o il is then distributed in the bearing along oil grooves (2\ [5]5
Q5— Section header —
5.1Siphon wick lubricator Sight feed lubricator They control the pressure of flow (2 (2\ [6]6
Q6— Section header —
6.1They prevent dirt and dust from entering into components of a system. (2 (2\
6.2It has a go od resistance to acid corrosion. It's hardness and strength decreases at low temperatures as a low melting point Sisal string Teflon [9]9
Q7— Section header —
7.1It is used to move a liquid from a lower to a higher level It is used to impart energy to a fluid (Any 1 (1\
7.2.1Outlet Inlet Gear Casing (4 (4\
7.2.2Rotary pump (1\ [6]6
Q8— Section header —
8.1It is to compress air in a container so that it can be used for driving pneumatic power tools and machinery. (1\
8.2As the lobed rotors turn, air is drawn into the inlet of the compressor . Ai r is then transferred along the outside, between the rotors and compressor casing towards the outlet Due to the meshing of the rotors, pressure is
8.3Reciprocating compressors Rotary compressors (2 (2\
Q9— Section header —
9.1.1Caused by excessive heat or chemical fumes
9.1.2Caused by fluid contaminating the belt
9.1.3
9.2Silent chains 10] TOTAL SECTION A:
Q10— Section header —
10.1HYDRAULIC YSTEM PNEUMATIC YSTEM Uses liquid Uses air Closed circuit liquid returns to tank Open
10.2.5
10.3Ensure that air supply is cool and clean. Inspect the receiver for leakages. Open drain valve to release any moisture. Make sure the intake filter is always clean. Air is readily available Pneumatic equipment are v
Q11— Section header —
11.1To support long, slender workpieces between centres To maintain concentricity of long workpieces while machining To reduce vibration or chatter, ensuring better finish of the workpiece To support workpieces against the pressure of heavy machining
11.2.1Long tapers can be turned Cross slide can be fed automatically (2 (2\
11.2.2Only external tapers can be turned As the centres are misaligned, uneven wear takes place (2 (2\
11.3.1Absolute dimensioning
11.3.2
Q12— Section header —
12.1.1
12.1.2Cutting material to length/cutting narrow grooves or slots Cut steps/cut slots Cut keyways/cut blind slots Milling slots/cutting profiles/facing narrow surfaces (4 (4\
12.2= 7 = 7 = 7 (5\
12.3.1s a process in which a workpiece rotates so that a number of equally spaced divisions can be machined
12.3.2s a slot that is drilled on a workpiece which does not go all the way through to the other side of the workpiece (2 (2\
12.4Rotating table (2 (2\
12.5Dirt underneath the wheel guard Grinding w heel is too soft Incorrect wheel dressing [20] TOTAL SECTION B: GRAND TOTAL:20