MD 2 Flashcards
A correct cutting angle on a drill for ordinary work is:
a. 45⁰ b. 59⁰ c. 64⁰ d. 70⁰
59⁰
When using a drill press, the work should be hold with:
a. glove hand b. the hand c. a vise and a clamp d. pliers
a vise and a clamp
A machining operation whereby the tool reciprocates and the feed is stationary.
a. reaming b. shaping c. planning d. turning
shaping
A machining operation whereby the tool rotates and the feed is stationary.
a. shaping b. milling c. turning d. reaming
milling
A machine used in shaping metal by means of abrasive wheel or removal of metals with abrasive.
a. shaper b. planer c. grinder d. power saw
grinder
To prevent leakage in dynamic seals, it is recommended to used
a. gaskets b. seals c. packings d. felts
packings
The process of checking or producing checkers on the surface of the piece by rolling checkered depressions in the surface.
a. indexing b. soldering c. knurling d. quenching
knurling
Tooth width measured along the chord at the pitch circle.
a. chord space b. chordal thickness c. chord clearance d. chord length
chordal thickness
It is recommended for high speed application that the maximum number of teeth in small sprocket should be:
a. 10 to 20 b. 16 to 32 c. 14 to 28 d. 18 to 24
18 to 24
Cast iron flywheels are commonly designated with a factor of safety of:
a 8 to 10 b. 10 to 13 c. 5 to 6 d. 18 to 20
10 to 13
An agency handling assistance to all foundry, machine shop and metallurgical plant operation.
a. DOST b. BOI c. MIRDC d. UNICEF
MIRDC
A metal characteristic that absorbs extreme deformation without rupture is called:
a. hardness b. ductility c. plasticity d. toughness
plasticity
The size of all the pipes from 1/16 inches to 12 inches is defined by _____ size.
a. design b. external diameter c. inside diameter d. tubular
inside diameter
Cutting lubricants used in drilling, reaming and lapping of cast iron parts.
a. soda water b. kerosene c. soluble oil d. dry
dry
The angle developed between tooth profile and radial line at its pitch point is referred as:
a. approach angle b. pressure angle c. recess angle d. base helix angle
pressure angle
The purpose of annealing is to make a metal:
a. harder b. medium hard c. softer d. shiny
softer
AISI numbering for silicon steel.
a. 85XX b. 92XX c. 93XX d. 87XX
92XX
Specific weight of steel in lbs/inches3
a. 0.832 b. 0.328 c. 0.283 d. 0.823
0.283
Ratio of coil to wire diameter, a measure of coil curvature.
a. spring rate b. spring index c. Wahl’s factor d. spring scale
spring index
When hole is smaller than the shaft, it will take pressure to pull the parts together, and the allowance is negative and is termed as:
a. negative fits b. negative allowance c. interference of metals d. negative allowance
interference of metals
A kind of thread that is generally used.
a. UNF b. UNEF c. UNC d. 8-Thread series
UNC
A machine tool used principally to machine flat or plane surfaces with a single point cutting tool.
a. shaper b. planer c. milling d. lathe
shaper
The ratio of relative viscosities colliding bodies after impact to their velocity before impact.
a. coefficient of friction b. coefficient of velocity c. coefficient of restitution d. coefficient of fluctuation
coefficient of restitution
In machine shop forging operation of lengthening a piece of stock while reducing the cross sectional area of work is called:
a. reducing b. upsetting c. upgrading d. de-sizing
upsetting