記憶度
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問題一覧
1
A mechanism that usually do the indexing in a machine tool:
C. Dividing head
2
The smallest area at the point of rupture of a tensile specimen divided by the original area is called:
D. Percentage reduction of area
3
The property that characterizes a material ability to be drawn onto a wire:
A. Ductility
4
Which of the following is not pertaining to the joining of metals?
C. Casting
5
Which of the following is not a heat treatment process?
A. Sintering
6
An instrument used to analyse the composition of metals:
A. Spectrometer
7
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
8
What is the common shop practice to prevent solder from running way from surface to be joined?
D. All of these
9
The product of the resultant of all forces acting on a body and the time that the resultant acts:
C. Linear impulse
10
How do you call a load that is applied transversely to longitudinal axis of member?
C. Bending load
11
Which of the following is a unit of energy?
A. Ft-lb
12
A hydrostatic bearing is one which:
A. Lube oil is supplied under pressure
13
An externally threaded fastener intended to be used with nut is said to be a:
A. Bolt
14
What is the other term for the Maximum-Shear-Stress Theory, as a failure prediction theory?
B. Tresca yield criterion
15
What is a form of correction that develops on highly localized areas on a metal surface?
D. Apitting
16
What are the stated maximum and minimum directions?
B. Limits
17
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
18
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
19
A flexible coupling consists of essentially of two chain sprockets connected with short continuous length of roller or silent chains.
A. Chain coupling
20
The most known lubricants being utilized in whatever category of load and speed are oil, air, grease and dry lubricants like:
D. Graphite
21
Steel containing large amounts of mild nickel and chromium:
C. Stainless steel
22
A kind of bolts which has no head an instead has threads on both ends.
A. Stud bolts
23
A kind of chuck which has reversible jaws which could be adjusted separately.
B. Independent chuck
24
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
25
A machine tool is a power-driven machine, capable of
D. doing all the above functions
26
Dovetail ways are used in
C. milling machines
27
A kinematic chain needs a minimum:
C. 4 links and 4 turning pairs
28
How many links are there in a pantograph?
B. 4
29
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
30
What tool is used in foundry for repeating the mould?
A. Swab
31
The column splice is used for increasing:
B. Length of the column
32
A cone formed by elements which are perpendicular to the elements of the pitch cone at the large end
B. Back cone
33
A gear is one in which angle is 90 degrees that is the pitch cone has become a plane
A. Crown gear
34
A material that should be avoided in constructing wood pattern:
A. Sap wood
35
What is the moment of inertia of a rectangle about its base?
B. bh³ / 3
36
The hardness of steel increases if it contains:
A. Martensite
37
How do you call a steel with 0.8% carbon and 100% pearlite?
D. Eutectoid
38
What is the range of the tensile strength of common varieties of cast iron?
B. 150 - 180 Mpa
39
Fatigue failure occurs when a part is subjected to:
D. Fluctuating stress
40
Paramagnetic alpha iron changes to gamma iron at what temperature?
B. 910°C
41
The diameter of the washer is generally:
B. Slightly more than the diameter of the bolt
42
The compression members tend to buckle in the direction of:
C. Least radius of gyration
43
A kinematic chain needs a minimum:
C. 4 links and 4 turning pairs
44
Which of the following pairs is formed if shaft is revolving in a bending?
A. Lower pair
45
How many links are there in a pantograph?
B. 4
46
A pantograph is a mechanism having:
A. Lower pairs
47
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
48
Which of the following is the orientation of the axes of the two shafts in cross helical worm?
D. Non-parallel and non-intersecting
49
In case of gears the addendum is given by:
A. One module
50
How do you call a cam where in the follower reciprocates or oscillates in a plane parallel to its axis?
C. Cylindrical cam