Engineering 10
P-type
it is one electron short to form the stable octet configuration. conduct electric current (supports movement of charge) by electric "holes". When electrons jump from hole to hole in one direction, the holes appear moving in the opposition direction.
Moment of Inertia
k = F / Y = 3EI / L^3
Forward
left motor (clockwise) ; right motor (counter-clockwise)
Turn right
left motor (clockwise); right motor (clockwise)
Reverse
left motor (counter-clockwise); right motor (clockwise)
Turn left
left motor (counter-clockwise); right motor (counter-clockwise)
conductors
materials have some loosely held electrons, which move through them very easily; (Most metals - like copper, aluminum or steel)
PN-junction
n-type and p-type materials brought together; used to direct the electron flow
Servo
shaft rotates through a specified angle, used with both old and new controllers
N-type
there is one electron extra to form the stable octet configuration. This extra electron is loosely bonded. conduct electric current (supports movement of charge) by the free electrons ----- just like metal but with fewer free electrons than that in metal
4
Consider the data field shown below in cells A1 through D4. A student inserts the equation, =COUNT(D1:D5) in cell B6. What result would appear in cell B6?
0
The spreadsheet shown below has data in cells A1 through A7. What value will appear in cell A9 as a result of the equation shown?
Insulators
are materials that hold their electrons very tightly (high bonding force). Electrons do not move through them very well. Rubber, plastic, cloth and glass
Electrons
carrying negative charge
Motor
continuous rotation of the shaft
32W
A current of 4 Amps is flowing through a 2Ω resistor. How much power is dissipated by the resistor?
0.15 to 0.25
A reasonable value to assume for the efficiency of a common solar cell that is used in typical PV installations on homes and businesses is
270 W
A student weighs 180 lb. This student is able to run up to the 3rd floor in 30 seconds. The 3rd floor is 10 meters above the ground floor. Which of the following values is closest to the average power this student exerted in climbing the stairs?
Solar cells are in series. Calculate the total V in the circuit by adding the voltage in the two cells. The I is constant.
Choose the answer that best describes this circuit
Rectangular hollow section
I = 1/12 * BH^3 - 1/12 bh^3
Rectangular solid section
I = 1/12 * b*h^3
Round solid section
I = pi(d)^4 / 64
Round hollow section
I = pi/64 [(do)^4- (di)^4]
Stiffness
The amount of deflection in a structure
hole
The concept describes the lack of an electron at a position where one could exist in an atom or atomic lattice
-2.59
The number 3 appears in cell A1 of an Excel spreadsheet. You write the following equation in cell C1. =3*(A1^2)+EXP(-0.3*$A1)-10*A$1 What number would appear in cell C1?
=IF(B3*C3<=12, "Yes", "No")
The specifications for a product you are developing require that the cross-section area cannot be greater than 12 in2. You have summarized the dimensions of 5 prototypes you have made. Column D has an equation to determine if your product meets specifications. It indicates that only specimen #5 meets the specifications. What is the equation in cell D3?
semi-conductor
These loosely bonded electron helps with conducting current. The conductivity is not nearly as good as a true conductor;
=sum(b2:b7)
To calculate the total number of parts in the inventory, what equation would you program into cell B8?
power
Voltage*I
140
What answer will appear for the equation in cell C1?
more Pepsi lovers
What answer will appear in cell D2?
Increase and decrease the number of decimals shown
What is the purpose of the two icons circled on the "Home" tab menu below?
4
What is the result of the equation in cell C1?
Bumper
When the switch is not pressed, the robot interprets this value as a 1 (high state). • When the switch is pressed the robot interprets the value as a 0 (low state).
Electrons at the N-P junction eventually form a barrier in the form of an electric field.
When you combine P-type and N-type silicon in a solar cell, what happens?