What is the primary mechanical advantage of screw threads?
Understanding Thread Specifications and Uses
Interactive Video
•
Physics, Science, Engineering
•
9th - 12th Grade
•
Hard
Patricia Brown
FREE Resource
The video provides an in-depth look at screw threads, their mechanics, and their importance in modern engineering. It covers the different types of threaded fasteners, the specifications of standard V threads, and compares unified and metric thread systems. The video also explains how screw threads convert rotational force into linear force and their various applications, such as in fasteners and precision measurement tools.
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
They convert linear force into rotational force.
They decrease the friction between surfaces.
They increase the speed of rotation.
They convert rotational force into linear force.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT a common use of screw threads?
Making liquid tight seals
Power transmission
Precision measurement
Creating electrical circuits
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What distinguishes a bolt from a screw?
Screws are always larger than bolts.
Bolts are always larger than screws.
Screws are used with nuts, bolts are not.
Bolts are used with nuts, screws are not.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the major diameter of a thread?
The largest diameter of a thread.
The diameter where the width of the threads and grooves are the same.
The diameter measured over the roots of the thread.
The smallest diameter of a thread.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is the pitch of a thread defined?
The number of threads per inch.
The distance between two adjacent threads.
The diameter of the thread.
The angle between the sides of the thread.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does 'UNF' stand for in thread series?
Universal National Fast
Universal National Fine
Unified National Fast
Unified National Fine
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which thread class is designed for the tightest fit?
Class 3
Class 4
Class 1
Class 2
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