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30 Cards in this Set
- Front
- Back
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A resultant force has both magnitude and:
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Direction
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The measure of gravitaional pull is:
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Weight
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Equation for pressure in an open system is:
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P=PwXh
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Which of the following does not refer or pertain to batteries?
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AC
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20F is equal to:
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-6.7C
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How much work is being done by a person holding a 60 pound suitcase 18 inches above the floor?
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None
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The cross sectional area of a cylinder can be found by:
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Multipying 0.7854X d2
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A pump lifts 2 cubic meters of water through a pressure difference of 2 X 10 5N/M2. How much fluid work is done by the pump?
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4X10 NM
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An electric motor that is connected to an overhead crane lifts stacks of reinforcement rods. Each stack of rods weighs 3,000 Newtons. How much work is done by the motor if it lifts 5 stacks of rods 50 meters?
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750,000 Joules
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The force like quantity in the equation for electrical work is:
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Voltage
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When gases are compressed, storage tanks should be located as close to the point of use as possible because:
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The flow rate is inversely proportional to the distance traveled.
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Find the charge that flows through an electric iron in 10 seconds if the iron is rated at 6 amperes.
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60 coulombs I=q/t
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A function generator changes frequency from 50 to 5000 Hz. What is delta f?
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4950 hertz I=q/t
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A heater is rated at 25,000 Btu/hr. What is the heat energy generated in 12 hours in a 144 square foot room?
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300,000 Btus- Qh=H/t
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When a substance goes from a solid to a liquid state without a change in temperature the heat added during the transformation is called:
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Latent Heat
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In the SI system, temperature difference is expressed in:
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Celsius degrees
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A way to increase resistance in a pipe is to:
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Lengthen the pipe
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A way to decrease resistance in a pipe is to:
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Heat the fluid
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A house has a thermal resistance of 0.13 C kcal/hr. What is the buildings heat flow rate when the temperature difference from inside to outside is 40 C.
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307.69 kcal/hr-Rt=Delta T/Qh
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A unit of measure, such as gal or liter is a unit of:
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Volume
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A rate is associated with a fluid system is:
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Volume or mass flow rate
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The frequency of a voltage can be measuredwith an:
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Oscilloscope
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One ampere equals:
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One coulomb per second
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A device used to contain and store heat energy is called a:
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Dewar Flask
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A Cromel and Constantan is used to measure:
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Temperature
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Which of the following has the greatest viscosity?
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Motor oil
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Copper wire and solder are each classified as:
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Conductors
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The fourth band of a 4 band resistor is the:
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Tolerance band
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Electrical resistance occurs because elctrons moving through a wire bump into:
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Atoms
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To find total resistance in a series circuit the individual resistances must be:
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Added
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