TPC 104 Flashcards
For very precise angle measurements degrees are divided into____ and ____
Minutes
Seconds
The force of gravity on an object is its ____. The measurement of how much matter is in an object is its ____.
Weight
Mass
If a force of 250 pounds acts on an object and moves it 10 feet, how much work has been done?
2500 foot pounds
The rate at which work is done is called ____. It is measured in ____.
Power
Foot-pounds per second
The amount of work a particle can do in going from the negative plate to a positive plate, divided by the amount of electrical charge on the particle, is called:
Potential difference
SI base units include length, mass, time, temperature and
Electrical current
The prefix milli- indicates one
Thousandth
The ampere is the SI base unit for all measurements of
Current
When should you convert metric measurements to standard US measurements?
As rarely as possible
Work is the product of force and ____. It is expressed in ____.
Distance
Joules
What is the decimal equivalent of 5/8 of an inch?
0.6250 in.
Which tool is used in layout work for scribing circles and transferring dimensions between a scale and the work?
Divider
In a clearance fit two parts fit together…
With a little room to spare
A vernier scale indicates zero when ____ align with the marks on the main scale
Both ends
A balanced dial on a dial indicator is graduated in ____ directions from zero. It is used for ____ -way comparison measurements.
Both
Two
If a hole is too large, which ends of a “go, no-go” plug gauge fit into the hole?
Both ends
Surface roughness is measured in…
Micro inches
During production, the hardness of small parts is often check by means of the highly sensitive ____ hardness tester
Vickers
X-ray equipment is used for making ____ inspections of manufactured parts.
Internal
The maximum slope at which a pile of loose material will stay without sliding, is called the angle of
Repose
The area of a parallelogram is measured in
Ft^2
Which of the following is the best approximation of the value of pi?
3.14159
On the earths surface, the strength of gravity generally is ____ at low
elevations, and ____ at high elevations. Gravity at the center of earth ____.
Strongest
Weakest
Is zero
How many board feet of lumber are there in 150 running feet of 2 x 4 studs?
100
Velocity refers to the ratio of change in ____ to the amount of ____.
Displacement
Time
Speed is the magnitude of ____ without the ____.
Velocity
Direction
If an object accelerates, there is a change in its ____.
Direction or speed or both
An object moves at a constant speed along a curved path. At the point where the path curves most sharply, the object has the
Highest acceleration
The force of gravity on an object is called
Weight
A moving object has three forces acting on it. The combine effect of all three forces is zero. The moving object will ____ speed and will ____ direction.
Not change
Not change
Measuring deformation is necessary in order to measure
Force
You can calculate the combined effect of several forces by first separating each force into its
Horizontal and vertical parts
A temperature at which some physical event occurs is called a ____ temperature
Critical
If a metal is heated to higher and higher temperatures, it first glows ____, then ____, and then ____.
Red
Orange
Yellow
What is the freezing temperature of water?
0°C
The temperature at which molecular motion stops is called?
Absolute zero
Which device measures temperature most quickly?
Optical pyrometer
A fluid is a
Liquid or a gas
If a solid has a density greater than that of a liquid into which it is placed, the solid will
Sink in the liquid
The flow rate of a moving fluid is a measure of the ____ of the fluid that moves past a given point in a given time
Volume
When you read a psychrometer, the dewpoint is ____ temperature.
Lower than the wet-bulb
An aneroid barometer contains
No liquid
What kind of charge does an electron carry?
Negative
The number of electrons inside a battery is always
Constant
Electrical energy per unit of charge is measured in
Volts
Potential difference is the difference in electrical ____ between two places.
Potential energy
One joule per second is called one
Watt
The instrument that compares the mass of an object to a known mass is called
Balance
