WorksheetsTheory Quiz (DPV10253) - Chapter 6
Total questions: 20
Worksheet time: 49mins
Why are pitch errors observed in threads?
Lack of inspection
Incorrect ratio of tool work velocity
Interference between mating parts
All of the above
What is used to measure the major diameter of an external thread?
Bench micrometer
Thread micrometer
One wire method
All of the above
Which type of threads are used to transmit power in one direction?
Square threads
Buttress threads
Both a. and b.
None of the above
The distance through which a screw thread advances axially in one turn is called:
Pitch of thread
Lead of thread
Depth of thread
Diameter of thread
What is the application of fastening?
Connecting threaded pipes and hoses to each other and to caps and fixtures.
Moving objects linearly by converting rotary motion to linear motion
It prevents linear motion without the corresponding rotation.
That list shows a types of thread. EXCEPT.
ISO Metric Screw thread
British Standard Screw thread
Unified Threads standard
International standard
For ISO metric threads, it consist of what shape of symmetric?
Y-shaped
V-shaped
U-shaped
O-shaped
In the plane of the thread axis, the flanks of the V have what degree of angle?
30°
60°
90°
120°
For British Standard Whitworth (BSW), state TWO (2) parts that using that standard.
bolt heads
screw
nut hexagonal
How much range of diameter that using British Association Screw Threads (BA) to set small screw threads?
2mm
4mm
6mm
8mm
What organization that control the Unified Thread Standard (UTS)?
ASME/ANSI
API
ASTM
This type of thread is a thread on the inside of a member:
Basic thread
External thread
Internal thread
Major diameter thread
This is the bottom surface joining the sides of two adjacent threads:
Lead
Pitch
Crest
Root
The standard number of threads per inch for various diameters is the:
Series of thread
Lead
Major diameter
Thread pitch
The degree of closeness of the measured value of a certain quantity with its true value is known as
Accuracy
Precision
Standard
Sensitivity
This type of fastener is designed to prevent movement between shafts and wheels.
Keys
Machine pins
Rivets
The root of ISO metric thread is
Flat
Round
Sharp corner
None of the above
The following is used to check the diameters of holes
Plug gauge
Ring gauge
Slip gauge
Standard screw pitch gauge
‘GO’ and ‘NO GO’ gauge is a type of
plug gauge
slip gauge
ring gauge
limit gauge
Error of measurement =
True value – Measured value
Precision – True value
Measured value – Precision
None of the above
