What is the flow of heat through a solid?
A) Convection
B) Conduction
C) Radiation
D) Laminar
Answer: B
Explanation: A) Incorrect. Convection is the transfer of heat through a fluid medium.
B) Correct. Conduction is the flow of heat through a solid.
C) Incorrect. Radiation is the transfer of heat through space.
D) Incorrect. Laminar is the condition in which the fluid flow is smooth and unbroken
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Name one of the main characteristics of icing.
A. It accumulates only on the leading edge of the bearing surfaces.
B. It accumulates on an aircraft only when the temperature is below minus 10 degrees centigrade.
C. It occurs when an aircraft is passing through a dense cloud or freezing rain zone.
D. It does not affect the performance of an aircraft since it is very thin.
A circulating pump for a solar collector costs $376.60. A contractor can buy it for 
? off. What will the contractor pay for the pump?
Fill in the blank(s) with the appropriate word(s).
What is the smallest gauge wire often used for residential lighting circuits?
A) 16 gauge B) 14 gauge C) 12 gauge D) 18 gauge
The three major parts that an electronic control system can be divided into are ________, ________, and ________.
A. Inputs, Outputs, Power B. Actuators, TCM, Ground C. Sensors, TCM, Conductors D. Sensors, Actuators, ECM