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問題一覧
1
Which of the following is not pertaining to the joining of metals?
C. Casting
2
Which of the following is the orientation of the axes of the two shafts in cross helical worm?
D. Non-parallel and non-intersecting
3
In a lathe machine, how do you call the diameter of the largest workpiece that can be rotated in a chuck or between centers without hitting the bed?
B. Swing
4
The property that characterizes a material ability to be drawn onto a wire:
A. Ductility
5
Non-ferrous filler metal is melted into grooves or as fillet on the mother metal; the base metal is not melted. This is commonly used for joining iron based machine parts or in repair works of some materials. It is called:
B. Braze welding
6
What are the stated maximum and minimum directions?
B. Limits
7
A flexible coupling consists of essentially of two chain sprockets connected with short continuous length of roller or silent chains.
A. Chain coupling
8
The smallest area at the point of rupture of a tensile specimen divided by the original area is called:
D. Percentage reduction of area
9
The diameter of the washer is generally:
B. Slightly more than the diameter of the bolt
10
In case of gears the addendum is given by:
A. One module
11
What is the moment of inertia of a rectangle about its base?
B. bh³ / 3
12
How do you call a cam where in the follower reciprocates or oscillates in a plane parallel to its axis?
C. Cylindrical cam
13
Which of the following is not a heat treatment process?
A. Sintering
14
What is the other term for the Maximum-Shear-Stress Theory, as a failure prediction theory?
B. Tresca yield criterion
15
The hardness of steel increases if it contains:
A. Martensite
16
Which of the following is a unit of energy?
A. Ft-lb
17
A material that should be avoided in constructing wood pattern:
A. Sap wood
18
What is the range of the tensile strength of common varieties of cast iron?
B. 150 - 180 Mpa
19
Which of the following describes the “slip” in belt drive?
D. Difference between the linear speed of the rim of pulley and the belt on it
20
Which of the following pairs is formed if shaft is revolving in a bending?
A. Lower pair
21
What is the common shop practice to prevent solder from running way from surface to be joined?
D. All of these
22
An externally threaded fastener intended to be used with nut is said to be a:
A. Bolt
23
A kind of chuck which has reversible jaws which could be adjusted separately.
B. Independent chuck
24
How do you call a load that is applied transversely to longitudinal axis of member?
C. Bending load
25
Which of the following is the best process for butt welding of two plates each of which is 25 mm thick?
A. Electro slag welding
26
The most known lubricants being utilized in whatever category of load and speed are oil, air, grease and dry lubricants like:
D. Graphite
27
A pantograph is a mechanism having:
A. Lower pairs
28
Dovetail ways are used in
C. milling machines
29
Fatigue failure occurs when a part is subjected to:
D. Fluctuating stress
30
A gear is one in which angle is 90 degrees that is the pitch cone has become a plane
A. Crown gear
31
What tool is used in foundry for repeating the mould?
A. Swab
32
The compression members tend to buckle in the direction of:
C. Least radius of gyration
33
A kinematic chain needs a minimum:
C. 4 links and 4 turning pairs
34
How do you call a steel with 0.8% carbon and 100% pearlite?
D. Eutectoid
35
What do you call a type of bolt threaded on both ends and can be used where a through bolt is impossible?
C. Stud bolt
36
A kinematic chain needs a minimum:
C. 4 links and 4 turning pairs
37
The column splice is used for increasing:
B. Length of the column
38
Steel containing large amounts of mild nickel and chromium:
C. Stainless steel
39
How many links are there in a pantograph?
B. 4
40
The product of the resultant of all forces acting on a body and the time that the resultant acts:
C. Linear impulse
41
An instrument used to analyse the composition of metals:
A. Spectrometer
42
What is a form of correction that develops on highly localized areas on a metal surface?
D. Apitting
43
Paramagnetic alpha iron changes to gamma iron at what temperature?
B. 910°C
44
How many links are there in a pantograph?
B. 4
45
A mechanism that usually do the indexing in a machine tool:
C. Dividing head
46
A tool which when pressed into a finished hole in a piece of work, provides centers on which the piece maybe turned or otherwise machined.
C. Mandrel
47
A hydrostatic bearing is one which:
A. Lube oil is supplied under pressure
48
A kind of bolts which has no head an instead has threads on both ends.
A. Stud bolts
49
A machine tool is a power-driven machine, capable of
D. doing all the above functions
50
A cone formed by elements which are perpendicular to the elements of the pitch cone at the large end
B. Back cone