Elements_05

Jacky Shane Luyas Buhia · 20問 · 2年前

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問題一覧

A mechanism that usually do the indexing in a machine tool:

C. Dividing head

The smallest area at the point of rupture of a tensile specimen divided by the original area is called:

D. Percentage reduction of area

The property that characterizes a material ability to be drawn onto a wire:

A. Ductility

Which of the following is not pertaining to the joining of metals?

C. Casting

Which of the following is not a heat treatment process?

A. Sintering

An instrument used to analyse the composition of metals:

A. Spectrometer

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

What is the common shop practice to prevent solder from running way from surface to be joined?

D. All of these

The product of the resultant of all forces acting on a body and the time that the resultant acts:

C. Linear impulse

How do you call a load that is applied transversely to longitudinal axis of member?

C. Bending load

Which of the following is a unit of energy?

A. Ft-lb

A hydrostatic bearing is one which:

A. Lube oil is supplied under pressure

An externally threaded fastener intended to be used with nut is said to be a:

A. Bolt

What is the other term for the Maximum-Shear-Stress Theory, as a failure prediction theory?

B. Tresca yield criterion

What is a form of correction that develops on highly localized areas on a metal surface?

D. Apitting

What are the stated maximum and minimum directions?

B. Limits

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

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

A flexible coupling consists of essentially of two chain sprockets connected with short continuous length of roller or silent chains.

A. Chain coupling

The most known lubricants being utilized in whatever category of load and speed are oil, air, grease and dry lubricants like:

D. Graphite

Steel containing large amounts of mild nickel and chromium:

C. Stainless steel

A kind of bolts which has no head an instead has threads on both ends.

A. Stud bolts

A kind of chuck which has reversible jaws which could be adjusted separately.

B. Independent chuck

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

A machine tool is a power-driven machine, capable of

D. doing all the above functions

Dovetail ways are used in

C. milling machines

A kinematic chain needs a minimum:

C. 4 links and 4 turning pairs

How many links are there in a pantograph?

B. 4

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

What tool is used in foundry for repeating the mould?

A. Swab

The column splice is used for increasing:

B. Length of the column

A cone formed by elements which are perpendicular to the elements of the pitch cone at the large end

B. Back cone

A gear is one in which angle is 90 degrees that is the pitch cone has become a plane

A. Crown gear

A material that should be avoided in constructing wood pattern:

A. Sap wood

What is the moment of inertia of a rectangle about its base?

B. bh³ / 3

The hardness of steel increases if it contains:

A. Martensite

How do you call a steel with 0.8% carbon and 100% pearlite?

D. Eutectoid

What is the range of the tensile strength of common varieties of cast iron?

B. 150 - 180 Mpa

Fatigue failure occurs when a part is subjected to:

D. Fluctuating stress

Paramagnetic alpha iron changes to gamma iron at what temperature?

B. 910°C

The diameter of the washer is generally:

B. Slightly more than the diameter of the bolt

The compression members tend to buckle in the direction of:

C. Least radius of gyration

A kinematic chain needs a minimum:

C. 4 links and 4 turning pairs

Which of the following pairs is formed if shaft is revolving in a bending?

A. Lower pair

How many links are there in a pantograph?

B. 4

A pantograph is a mechanism having:

A. Lower pairs

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

Which of the following is the orientation of the axes of the two shafts in cross helical worm?

D. Non-parallel and non-intersecting

In case of gears the addendum is given by:

A. One module

How do you call a cam where in the follower reciprocates or oscillates in a plane parallel to its axis?

C. Cylindrical cam

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