Flashcard Set Preview
Side A  Side B  
1 
The wheels are connected by a belt. As the wheel on the left makes one revolution, the wheel... 
more than one revolution


2 
If the wheel on the left turns clockwise, in which direction does the wheel on the right... 
Counterclockwise


3 
A woman sits in a dragster at the beginning of a race. As the light turns green, she steps... 
More than while stationary


4 
All the gears in the system are moving and Gear 1 rotates clockwise. What other gears in... 
3 and 5


5 
In which case is less force needed to move weight (W) up the ramp? A B The... 
A


6 
If each pendulum is released from the position shown, which pendulum requires the longest... 
B


7 
The voltage drop or potential difference is greater across which resistor? Ra Rb It... 
It is the same across either resistor


8 
If the large portion has 3 times the surface area of the small piston, how far must the... 
3 inches


9 
If you had to swim across a fast moving stream exactly perpendicular to the banks, when... 
Directly across from where you started According to the answer sheet given,... 

10 
If the three squad leaders are to stay on line, which of them must turn the most slowly? A B C 
C


11 
In order to balance the scale above, the fulcrum should be moved toward... 
toward B


12 
If the scale was balanced before u moved the fulcrum, which of the balls is more dense? Ball... 
Ball B


13 
Where would it be best to hold a pruners' handles while trying to cut a branch? A B It... 
B


14 
If the current leaves the battery in the direction shown in the diagram, what is the direction... 
A


15 
The voltage drop is greater across which resistor Rx Ry It... 
Rx


16 
Where is the current greater in the circuit? Greater at A than B Greater... 
The same at A and B


17 
X, which has a negative charge, is positioned between a positive charge (A) and a negative... 
A


18 
In a stream, water flows through narrow and wide sections. In which sections does the water... 
Narrow section


19 
At what point is the velocity of a bullet fastest? When it leaves the muzzle When... 
When it leaves the muzzle


20 
The rate of heat exchange is faster between an ice cube and 100° glass... 
an ice cube and 100° glass of water


21 
If two glasses of water 40° and glass A was 1/2 full whle glass B was 3/4 full, which glass... 
B


22 
Did you read a mechanical comprehension hand out? No, but I will now. No!... 
Yes, and I understood everything.


23 
If the large pistion has 2 times the surface area of the small piston, how far must the... 
1/2 inch


24 
When the wheels X are turned at the same speed, which turns wheels Y faster? Wheel... 
Wheel X1


25 
Imagine if wheels X where the front sprocket of a bicycle and wheels Y the rear sprocket.... 
System A


26 
If wheel X1 is exactly twice the size wheel Y1, and wheel X1 is turned one time, how many... 
Two turns


27 
In system A, as wheel X1 makes one revolution, point A travels a greater... 
travels the same distance as point B


28 
Above is a cross section of a wing. Air travels over it and under it. As the wing moves... 
greater above the wing


29 
When the plug in the tube is removed, water flows into the tube out... 
into the tube


30 
For which position of the weight is the tension on the string at point X greater? A B It... 
B


31 
When is it more difficult to hold an inflated beach ball under water? Close... 
Down deep


32 
When does a beach ball seem more buoyant? Close to the surface Down... 
Down deep


33 
Which weight exerts less pull on the horizontal bar from which the weights hang by strings? A B Each... 
A


34 
A submarine is traveling through the ocean when its outer hull cracks and air pushes out... 
A


35 
A submarine is traveling through the ocean when its outer hulls cracks and air pushes out... 
towards the starboard


36 
If the board to the left was placed in water, in what orientation would it float? A... 
B higher than A


37 
If two resistors and a battery are arranged in each of the above circuits, which circuit... 
Circuit A


38 
The lever above is anchored just to the left of point A. If one were to raise it one inch... 
more than one inch


39 
In which case is more force needed to raise the weight? A B The... 
A


40 
Which system requires more rope to be pulled to lift the weight the same distance? A B They... 
B


41 
Which pendulum takes less time to make one swing? A B Each... 
A


42 
If pendulum A was the same length as pendulum B, which pendulum would take more time to... 
Each would take the same time to make one swing


43 
Newton's First Law An object in motion will stay in motion, object at rest will stay in... 
at rest


44 
Newton's Second Law Force = Mass * Gravity Acceleration Velocity Speed 
Acceleration


45 
Newton's Third Law For every action there is a) an equal... 
a) an equal and opposite reaction


46 
Speed of conduction, which occurs in solids and stationary liquids a)... 
c) depends on the temperature difference


47 
Butcher Knives, Axes, Nail Cutters, are examples of Levers Pulleys Wedges Screws 
Wedges


48 
This device is typically used to measure wires, spheres, shafts and blocks. Micrometer Multimeter Tape... 
Micrometer


49 
Compressing air in a closed place will _______ the volume and ______ the pressure decrease,... 
decrease, increase


50 
Bernoulli's principal applies to liquids applies to air involves... 
all of the above 

51 
This class of lever is like your everyday crowbar. The fulcrum is in the middle with the... 
First class lever


52 
On this class lever, the fulcrum is on the end, the resistance force, the load, is in... 
Second class lever


53 
On this class lever, the fulcrum is on the end of one side, the effort force is in the... 
Third class lever


54 
The formula for force is 
mass times acceleration


55 
The maximum weight, W, that can be lifted as shown with a pull of 100 lbs is 100... 
200 lbs


56 
A 5 kg wad of clay is tied to the end of a string. A 300 gm copper moving horizontally is... 
8.3 m/s


57 
Which exerts a larger force over a distance? A small force over a long... 
A small force over a long distance


58 
The formula for Work is 
Force x distance


59 
The formula for Efficiency is

Workout/Workin , since friction causes inefficiency. The fraction is never greater than...


60 
A force acting on a surface is called pressure, and is calculated by

Pressure = Force / Area Can be used for fluid pressure and atmospheric... 

61 
An observer standing on the ground sees you running 55 mph. If you were running towards... 
45 mph


62 
A 300 lb weight rests on a hydraulic surface with an area of 376 square inches (2 square ft)....

28.8 lbs


63 
Pressure in liquids that are not moving is called ________ pressure, and is caused by ______.... 
hydrostatic/gravity/increases


64 
____________ pressure is caused by the weight of the air between the earth's surface and... 
Atmospheric 

65 
Energy travels from objects of different temperature in the form of _____ through the process...

Heat


66 
_________ occurs in liquid and gases by calculating currents caused by a difference in density.... 
Conduction/Convection/Temperature


67 
Electrical forces are caused by electrical charges which may be positive or negative. Which... 
Electrical forces decrease as the distance between charge particles increases.


68 
This circuit element dissipates energy through heat Resistors Capacitors Inductors Diodes Transformers 
Resistors


69 
This circuit element stores electrical energy between two parallel plates Resistors Capacitors Inductors Diodes Transformers 
Capacitors


70 
This circuit element stores magnetic energy Resistors Capacitors Inductors Diodes Transformers 
Inductors


71 
This circuit element restricts current to only one direction. A semiconductor used as a... 
Diodes


72 
This circuit element is used to convert electricity from one voltage to another Resistors Capacitors Inductors Diodes Transformers 
Transformers


73 
The two kinds of circuits that you are responsible for are:

Parallel circuits Series circuits 

74 
These kinds of circuits are identifies by seeing sever circuit elements, (resistors, lights,...

Parallel circuits, and in this circuit, the current gets divided between two or more elements


75 
In these kinds of circuits, all of the circuitelements are in a row along a single wire similar...

Series circuits, and in this circuit, the voltage will continue to drop as it passes through...


76 
What is Ohm's law?

I = V/R 

77 
As you follow the path of the current from the positive node away from the battery and through...

Voltage drop


78 
The theory behind leverage is that the longer the lever, the more ______ u produce. force torque distance weight 
torque, which is the product of force and distance 

79 
Doubling the length of the leverarm would ________ the torque that you apply. 
double


80 
The torque created by the hand must _______ the torque produced by the weight before it... 
Equal


81 
Left Side: Force = 60 lbs Distance to fulcrm = 8 ft Right... 
32 lbs


82 
The _______________ of a lever is calculated by dividing the armlength that you are applying... 
Mechanical Advantage 

83 
What is the formula for the Mechanical Advantage of a lever?

Effort Arm / Resisting Arm MA = length of effort arm ÷ length of resistance... 

84 
What is the Mechanical Advantage of in the diagram? 1 1.44 1.88 2 
1.88


85 
You may see problems where weights and forces are acting on a single lever arm. It's possible... 
clockwise and counterclockwise


86 
Solve for the unknown force or distance 11 lbs 15 lbs 10.9... 
11 lbs


87 
A pendulums has three weights attached, each 8 in away from each other. One string... 
a) The one with the longer string takes the longest to make one complete swing The... 

88 
You had two tennis balls and held them over a 10 story building, and you dropped Tennis... 
They hit the ground at the same time


89 
Pushing a weight up an incline requires only a fraction of the force needed to lift the... 
all of the above


90 
For a height of 5, and a slopelength of 10, the Mechanical Advantage in the diagram is 10 15 1 2 
2 

91 
The mechanical advantage for a pulley system a) equals the number of... 
equals the number of ropes within the system Only MOVEABLE pulleys... 

92 
The load is supported by how many strands of rope? 1 2 3 4 
3 

93 
If the pull of the truck in the diagram is 100 lbs, what is the maximum weight of... 
400 lbs NOTE: Also the weight will raise 1 ft for every 4 ft you... 

94 
When several ropes are in contact with the weight, they all contribute equally. Tension... 
the force that the rope sustains internally the force that is needed... 

95 
In the figure, there are ropes holding the weight up. Therefore they each contribute ____... 
1/3


96 
This specifies the change in position of a point in reference to a previous position. In... 
Displacement


97 
R = (D*R)/d is the formula for Radius Range Gear Revolutions 
Gear Revolutions r=(D*R)/d ; r*d=R*D 

98 
Hydrometers use floats to measure specfic gravity displacement hardness... 
specfic gravity


99 
Specific gravity is the weight of a ______ compared with the weight of the water. solid gas liquid mass 
Liquid


100 
The liquid with the highest specific gravity will cause the float to rise... 
the float to rise higher in the glass tube


101 
Pliers and scissors are ________ levers and explain where the fulcrum of the lever is. First... 
First class. The fulcrm is in the middle 

102 
A nutcracker or wheelbarrow are _________ levers. First Class Second... 
Second class. The fulcrum is at one end, load is in between. 

103 
Tongs or tweezers are examples of _________ levers First Class Second... 
Third Class Fulcrum is at one end, effort is in between. 

104 
In pulley's, the smaller pulley will turn _______ than those larger than it. Faster Slower Same... 
Faster It has to "keep up" and therefore turns faster. 

105 
a* d = A * D a = area d = displacement A = bigger area d... 
Mechanical Advantage in a piston


106 
An axe is classified as a wedge, which is an inclined plane first... 
inclined plane


107 
The __________ the fulcrum is from the resistance arm, the __________ amount of force that... 
closer, greater, higher


108 
No electricity flows through burnt out bulbs, but a ________ can bypass it if connected... 
voltimeter


109 
Which of the following is true: Current and Voltage varies in a parallel Current... 
Current is constant in a series, voltage is not Current * resistance =... 

110 
The current with the _______ resistance is usually in series, because it forces the current...

greater


111 
In a 2 pulley system, the movable pulley will only move up half the distance, and spin half... 
No answer. That was a statement.


112 
What is the rpm for this wheel, that requires 2 contacts per second? 15 16 48 8 
15 twice per second = 120 contacts per minute. 8 rods on wheel. 120/8=15 

113 
Heat is a form of calories motion energy pressurization 
energy


114 
On a standard day, at sea level, assuming static conditions, the speed of sound is 1100... 
1100 ft per sec


115 
For a plane to fly, air flowing over the top of a wing creates a vaccum, while the air flowing... 
a) remains at approximately the same air pressure


116 
The diagram depicts airflow around the wing of an aircraft. Most of the lift is caused by a)... 
d) decreased air pressure on the top side (side A)


117 
In the diagram, which of the ff statements is not true? a) pulley 2 would... 
c) pulley 1 would spin faster than pulley 3 according to the book 

118 
Which tool below is the best for cutting metal? hacksaw chainsaw rotary... 
hacksaw hacksaw was designed for metal. 

119 
Which of the ff is a type of lever? elevator seesaw door... 
seesaw


120 
What is the formula of force for a lever? 
Fᴱ = FL dL / dᴱ Formula can be changed to Fᴱ dᴱ = FL... 

121 
Approx how much force must be exerted to lift the box? 67 lbs 100... 
67 lbs Fᴱ dᴱ = FL dL Fᴱ 30ft = 200lb * 10ft Fᴱ... 

122 
Which wrench would require more force to turn a bolt? Wrench A Wrench... 
Wrench A


123 
In order to move the block five feet, how many feet of rope would have to be pulled? 5 10 15 20 
15


124 
The number of cranks the crankshaft of a V6 engine has is 2 4 6 8 
6 6 pistons, 1 crank per piston 

125 
Pulley A is the same size of Pulleys B and C, and twice the size of Pulley D. For each revolution... 
two according to the book, two. 

126 
In order to lift a 100 lb load onto a dock five feet high, using only 25 lbs of force, how... 
20 ft 100 / 25 = 4 4 = required MA for an inclined plane 4... 

127 
One horsepower is equal to a) 33,000 ftpound work per min b)... 
a) 33,000 ftpound work per min


128 
In the diagram, how many pulleys are turning in a clockwise direction? one two three four 
four according to the book, 4 

129 
Wheel A has a diameter of 10 inches. Wheel B has a diameter of 25 inches. If both revolve... 
Wheel B


130 
How many gears are turning in a counterclockwise direction? two three four five 
three


131 
If Gear 1 has revolves twice, how times will Gear 2 revolve? 1 2 3 4 
1 The picture would have 2 gears, a small 10 tooth, and a large 20... 

132 
In the figure, for each complete revolution of the cam, how many times will the valve open? 1 2 3 4 
3


133 
What is the area of a cylinder? 
2(π r²) + (2 π r)* h 

134 
In the hydraulic system depicted, the cylinder on the left has a diameter of 2 inches and... 
900 lbs 

135 
In the design, which tank(s) will overfill? Tank A Tank B Tank... 
Tank A and C


136 
Which of the following are not parts of a braking system of an automobile? discs master... 
axel 

137 
On a braking system, the axel supports the wheel, but is not part of the braking system.... 
master cylinder


138 
When a machine magnifies force, it is referred to as magnification factor mechanical... 
mechanical advantage


139 
A pitch is a) the distance between the threads of a screw b)... 
a) the distance between the threads of a screw


140 
When an object is at equilibrium a) its velocity does not change b)... 
a) its velocity does not change


141 
Equilibrium is a) when at object is at rest b) when 2 or more... 
b) when 2 or more forces act to cancel the effects of each other An object... 

142 
An example of a simple machine is a door hinge light switch can... 
all of the above


143 
When a heliumfilled ballon rises, the force responsible is friction air... 
air pressure


144 
In physics, power can be defined as work/time energy/efficiency leverage/mass friction/drag 
work/time


145 
The force acting on an object dropped from a building is buoyancy elastic... 
gravity


146 
If you remove your foot from the gas pedal in ur car, it will slowly coast to a stop. The... 
friction


147 
If a driver wheel is present, the adjacent wheels will rotate according to how _________... 
close The closer to the center, the faster it will move. 

148 
By increasing the length of the lever arm, the effort is increased, enabling a valve to... 
b) moving the lever farther will cause less effort NOTE: ...and lets the... 

149 
What is the formula to find the volume of a sphere?

4/3π r³


150 
What is the formula to find the area of a sphere?

4 π r²


151 
If two weights hang from two different strings attached to a bar, less pull is exerted by... 
b) the length of the string does not matter


152 
The deeper you go with an inflated ball, the more difficult it is to hold it underwater.... 
b) will increase, depending on how deep you go into the water


153 
Rate of heat exchange is _____ through objects of greater temperature difference slower the... 
faster


154 
Think about putting your thumb on the end of a hose makes the water spray. a)... 
c) all of the above


155 
This kind of engine consists of an intake, compression, combustion, and exhaust. 2... 
4 stroke


156 
What is the mechanical advantage of a wheel and axle? 
radius of axel to handle divided by the radius of the drum radius(axel... 

157 
Statics and Equilibrium Formula for a moment? 
Force * distance


158 
________ energy is stored in an object while _________ energy is energy in motion. Kinetic,... 
Potential, Kinetic


159 
I = Q/T Define I, Q, T Current, charge, time Voltage,... 
Current, charge, time


160 
This device measures the current flow in a circuit Ammeter Voltmeter Multimeter 
Ammeter


161 
This device measures does the job of both measuring the flow in a current and the voltage Ammeter Voltmeter Multimeter 
Multimeter


162 
The formula for Power is

Power = volts * amperes


163 
Units for a charge is coulomb, C ampere, A volts, V watts,... 
coulomb, C


164 
Units for current flow are coulomb, C ampere, A volts,... 
ampere, A


165 
Vise MA = (2*pi*length of handle) divided by what? 
pitch of thread


166 
Formula of Weight is Mass * Gravity Gravity is equal to 9.81... 
9.81 m/s² All the other answers are off by 0.1 only. 32.2... 

167 
The formula for Density is 
Mass / Volume


168 
The formula for Relative Density is

Density / Density(Reference Material)


169 
If you add salt into a liquid, the solution has a lower freezing point. This is because a)... 
a) there is an increase in specific gravity Specific gravity usually means... 

170 
Heat always distributes between objects travels from hot... 
travels from hot to cold


171 
Compressing air in a closed place will decrease the volume and raise the temperature a)... 
True


172 
A square plate is hanging by 4 wires (one on each corner). One breaks, and it's hanging... 
b) the 2 diagonally across from each other hold an equal amount that is more than the lone...


173 
Will an airplane with engine and propeller take off on a treadmill or converyor belt, regardless...



174 
Will a glider (no engine or propeller) take off on a treadmill or converyor belt, regardless...



175 
A common example of a firstclass lever is a seesaw a wheelbarrow tongs 
a seesaw


176 
The force F required to balance the weight of 60 lbs on the lever, shown in the diagram... 
210 lbs


177 
The mechanical advantage shown is 4 5 8 
5


178 
What effort must be exerted to the handles of the wheelbarrow shown carrying a load of 200... 
50 lbs


179 
The bar, which is exactly 4 inches in length, has a 275 lbs weight on one end and a 125 lb...

1 1/4 inches


180 
Neglecting friction, what is the mechanical advantage in using a single fixed pulley as... 
1


181 
In the figure shown, the pulley system consists of a fixed block and a moveable block. Neglecting... 
50 lbs


182 
The weight W is to be raised as shown in the figure by attaching the pull rope to the truck.... 
24 ft


183 
The formula for an inclinded plane is MA = L/H MA = mechanical... 
H = height MA = L / H L = length 

184 
A gradual slope will provide a ________ mechanical advantage than a steep slope. higher lower 
higher


185 
In the figure shown, the service person is using a plank to roll a 300pound barrel... 
100 pounds


186 
How do you find the mechanical advantage for a wheel and axel? 
Diameter/Radius


187 
In the figure shown, a bucket is being raised by a wheelandaxel arrangement. If the distance... 
4


188 
To make a 1/2" hole in a block of wood, use tool A B C 
B


189 
To cut a thread on a 1/2" brass rod, use tool A B C 
A


190 
The number 18 appearing on the tool shown above indicates depth of... 
threads per inch


191 
Which of the 1½ volt dry cell battery connections shown above will deliver 6 volts? 1 2 3 
2


192 
In the figure given, if the thickness of the wall of the pipe is ½", the inside diameter... 
3"


193 
The figure above represents a revolving wheel. The numbers 1 and 2 indicate two fixed points... 
c) points 1 and 2 make the same number of revolutions per minute


194 
In the figure shown, if gear A makes 14 revolutions, gear B will make 14 17 21 
21


195 
With the wheels in the position shown in the figure a) wheels S and T will... 
b) wheels S and T will rotate in the same directions


196 
In order to open the valve four times every second, the wheel must rotate at 12... 
24 rpm 4 times every second = 240 10 rods on the wheel 240/10 

197 
In the figure shown, a 160lb individual jumps off an 800lb raft to a point in the water... 
a) 2 ft in the opposite direction


198 
The figure shows a levertype safety valve. It will blow off at a lower pressure if weight... 
moved to the left


199 
As shown in the figure, four air reservoirs have been filled with air by the air compressor.... 
100 lbs


200 
In the figure above, the number of complete turns the vise handle must make to fully close... 
18


201 
In the figure shown, the centertocenter distance between the two poles is 1... 
1 15/16"


202 
If an 8" level indicates 16 quarts of oil in the tank, then the number of quarts of oil... 
4 quarts


203 
Which illustration depicts the compression stroke? X Y Z 
Z Both valves are closed and the piston is moving upwards 

204 
What is the proper sequence of the four strokes of a piston in a gasoline engine W... 
Y Z X W


205 
The gauge shown above is a depth gauge feeler gauge thread... 
thread gauge The thread or screwpitch gauge is used to determine the pitch... 

206 
The wrench shown is generally used when a) a definite force must be applied... 
a definite force must be applied to a nut or bolt head The torque is read... 

207 
Which of the figures shown is the proper procedure for pulling adjustable wrenches? A B Both... 
A The handle of the adjustable wrench should be pulled toward the side... 

208 
Every object in a state of uniform motion tends to remain in that state of motion unless... 
True


209 
Newton's Law describes a relationship between an object's _______ and _______ as the... 
mass, acceleration


210 
In Newton's Third Law, force a) is neither created or destroyed b)... 
c) always elicits an equal, opposite force acting against it Whenever a... 

211 
A 150 lb man jumps off a 600 lb raft to a point in the water 12 ft away. Theoretially, the... 
3 ft in the opposite direction 150 lb x 12 ft = 600 lb x ? ft 

212 
The mechanical advantage of a lever can be increased by a) placing... 
d) both a and c


213 
A lever arm is in balance when the force x length of one side of a fulcrum is equal to the... 
10 lbs 

214 
Then tension of a string in figure A is greater than the tension of a single spring in Figure... 
L) Three times greater than in B


215 
Pulleys. Which of the following is always not true about a pulley. a) a... 
e) all of the above


216 
What amount of force is required to move the weight (assume the supported objects all weight... 
50lbs


217 
What amount of force is required to move the weight (assume the supported objects all weight...

33.3 lbs


218 
What amount of force is required to move the weight (assume the supported objects all weight...

25 lbs


219 
The immoveable one pulley system provides ___ the force to lift the object and will have... 
1/2 There is 1 rope. Divided evenly into 2, and no mechanical advantage,... 

220 
If the pulley is immoveable, what is the minimum force that must be applied to position... 
10.1 lbs over 3 ft


221 
This is Boyles Law: a) Compressing a gas to 1/2 volume doubles the... 
c) Both A and B Actually, Boyle's law describes the inversely proportional... 

222 
Charles' Law is when a) you heat some liquid, and the temperature changes,... 
b) you open a can of coke, and the soda starts fizzing out If gas is... 

223 
Bernoulli's Principal is when a) a good pitcher throws a curve ball b)... 
d) both a and b Bernoulli's princiapl states that as the velocity of... 

224 
The higher the altitude, the more dense the air. True False 
False


225 
The deeper an object is submerged, the more pressure is exerted upon it. True False 
True


226 
Which of the statements about weight are true? a) Weight is the same closer... 
b) Weight is greater on planets with greater mass Mass does not change... 

227 
If Gear R is the driver, at the moment shown, Gear S is P) not moving Q)... 
T) moving in the opposite direction as Gear R


228 
If Gear A makes 14 revolutions, gear B will make A) 9 revolutions B)... 
D) 21 revolutions


229 
_______ is the factor or ratio by which a mechanism multiplies the force or torque applied...

Mechanical Advantage Output force Input force or distance... 
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