POE Q1 Exam 2025

Last updated 3 months ago

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Library

POE Q1 Exam 2025

Last updated 3 months ago

30 questions

Required

2

Required

2

Required

2

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A simple gear train is composed of three gears. Gear A is the driver and has 8 teeth, gear B has 24 teeth, and gear C has 16 teeth. If the output is C, what is the gear ratio?

A first class lever in static equilibrium has a 500 lb resistance force and 15 lb effort force. The lever's effort force is located 4 ft from the fulcrum. What is the actual mechanical advantage of the system?

Match definitions with the appropriate answers.

Draggable item		Corresponding Item
Ratio of distance traveled by the applied effort and resistance force within a system.		Lever
An external force applied to an object.		Actual Mechanical Advantage
The ratio of the magnitude of the resistance and effort forces applied to a system.		Ideal Mechanical Advantage
A rigid bar used to exert pressure or sustain weight at one point of its length by the application of a force at a second and turning at a third on a fulcrum		Effort Force

What is a Moment?

A toothed wheel whose teeth engage the links of a chain.

Two different sized circular objects that are attached together and turn as one.

The turning effect of a force about a point equal to the magnitude of the force times the perpendicular distance form the point to the line of action from the force.

The amount of effort is takes to turn a force when the effort is applied parallel to the resistance and directly in the line of action neglecting the effect of friction.

Impeding effect exerted by one material object on another.

What is the Actual Mechanical Advantage (AMA) of the inclined plane?

Calculate the current at R2.

Identify a non-renewable energy source.

Biomass

Geo-Thermal

Hydro-Electric

Natural Gas

If a student lifts a 225.4N ball 1.202 m in 20 sec, how many joules of work did the student complete?

What is Biomass?

Plant materials and animal waste used especially as a source of fuel.

A resource that cannot be replaced once used.

A dynamo or similar machine for converting mechanical energy into electricity.

The production of electricity in conductors with the use of magnets.

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

Energy produced by animal power such as sled dogs or a horse drawn plow.

The use of heat form within the Earth or from the atmosphere near oceans.

What is Geothermal Energy?

A resource that cannot be replaced once used.

The use of heat form within the Earth or from the atmosphere near oceans.

The production of electricity in conductors with the use of magnets.

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

Energy produced by animal power such as sled dogs or a horse drawn plow.

A dynamo or similar machine for converting mechanical energy into electricity.

Plant materials and animal waste used especially as a source of fuel.

When components are wired in a parallel circuit, what happens to the total resistance?

Total resistance does not change as long as the applied voltage remains the same.

Total resistance does not change as the individual resistors change.

Total resistance does not change because of the constant current.

Total resistance changes as the individual resistors change.

What is Energy?

Stages a product goes through from concept and used to eventually withdraw from the marketplace.

The ability to do work.

The flow of electrical power or charge.

Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.

Individual fuel cells that are combined in parallel.

A property of an object which determines the direction of heat flow when the object is placed in thermal contact with another object.

Individual fuel cells that are combined in series.

Calculate the total resistance of the circuit.

A machinist is using a 6 inch long wrench to tighten a 1/4 inch bolt. What is the moment (in foot-pounds) if he applies 175 pounds of force to the wrench?

A cart is being pushed up an inclined plane. The vertical height of the inclined plane is 7 feet. The effort force required to push the cart up the inclined plane is 6.3 lb. The cart weighs a total of 15 1/3 lbs. What is the IMA? (Precision 0.00)

What is the total current in the given in a simple circuit with 3 resistors (413 ohms, 1.3 kilo-ohms, and 0.513 kilo-ohms)?

A wheel driven wheel and axle system will have a mechanical advantage...

Calculate the ideal mechanical advantage of a given bolt with the thread notes of 5/16 24 NF. The distance from the center of the bolt to the end of the wrench being used to tighten the bolt is 1 foot and 1 inch.

If mechanical advantage is greater than 1, proportionally _____ effort force is required to overcome the resistance force.

If you are using a simple gear train to increase the speed of a vehicle, which gear should be attached to the wheel axle?

What unit is constant in a series circuit?

What is d2 if the bears are in static equilibrium?

A motor running a winch system can lift a 3N load 6 meters in 60 seconds while running at an average of 9 volts and drawing 500 mA. What is the efficiency of the system?

Calculate the ideal mechanical advantage of the lever shown.

If you lift a weight 10 inches using a pulley system with 8 supporting strands, what length of rope (in inches) would you have to pull?

Calculate the resistance force if the lever is in static equilibrium.

Calculate the total gear ratio of the gear train if gear A is the driver.

What is the IMA for the pulley shown?

The electric winch is powered by an 18V battery. The winch lifts the weight shown a total of 13 meters and draws a total of 20 Amps. the weight is 210 Newtons. It takes a total of 17 seconds. What is the Power Out for the given scenario?

Which of the following best describes the work done by a constant force on an object?

Work is the amount of force applied regardless of the distance the object moves.

Work is calculated as the product of force and distance only when an object moves in a perpendicular direction to the force.

Work is equal to the force applied on the object times the distance moved by the object in the direction of the force.

Work is the measure of energy transferred to an object when the object remains stationary.

A simple gear train is composed of three gears. Gear A is the driver and has 8 teeth, gear B has 24 teeth, and gear C has 16 teeth.  If the output is C, what is the gear ratio?

4:1

1:2

1:6

6:1

3:1

2:1

1:4

1:3

A first class lever in static equilibrium has a 500 lb resistance force and 15 lb effort force. The lever's effort force is located 4 ft from the fulcrum. What is the actual mechanical advantage of the system?

66.66

1875

16.33

0.12

30,000

133.33

500

33.33

Match definitions with the appropriate answers.

Ratio of distance traveled by the applied effort and resistance force within a system.

Lever

An external force applied to an object.

Actual Mechanical Advantage

The ratio of the magnitude of the resistance and effort forces applied to a system.

Ideal Mechanical Advantage

A rigid bar used to exert pressure or sustain weight at one point of its length by the application of a force at a second and turning at a third on a fulcrum

Effort Force

What is a Moment?

A toothed wheel whose teeth engage the links of a chain.

Two different sized circular objects that are attached together and turn as one.

The turning effect of a force about a point equal to the magnitude of the force times the perpendicular distance form the point to the line of action from the force.

The amount of effort is takes to turn a force when the effort is applied parallel to the resistance and directly in the line of action neglecting the effect of friction.

Impeding effect exerted by one material object on another.

What is the Actual Mechanical Advantage (AMA) of the inclined plane?

5

3.75

2.5

1

12.5

0.4

0.27

Calculate the current at R2.

7.2 mA

6.3 mA

36 mA

3.6 mA

17.4 mA

25.5 mA

Identify a non-renewable energy source.

Biomass

Geo-Thermal

Hydro-Electric

Natural Gas

If a student lifts a 225.4N ball 1.202 m in 20 sec, how many joules of work did the student complete?

5418 J

271 J

14 J

11 J

3750 J

330 J

188 J

What is Biomass?

Plant materials and animal waste used especially as a source of fuel.

A resource that cannot be replaced once used.

A dynamo or similar machine for converting mechanical energy into electricity.

The production of electricity in conductors with the use of magnets.

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

Energy produced by animal power such as sled dogs or a horse drawn plow.

The use of heat form within the Earth or from the atmosphere near oceans.

What is Geothermal Energy?

A resource that cannot be replaced once used.

The use of heat form within the Earth or from the atmosphere near oceans.

The production of electricity in conductors with the use of magnets.

A natural fuel such as coal of gas, formed in the geological past from the remains of living organisms.

Energy produced by animal power such as sled dogs or a horse drawn plow.

A dynamo or similar machine for converting mechanical energy into electricity.

Plant materials and animal waste used especially as a source of fuel.

When components are wired in a parallel circuit, what happens to the total resistance?

Total resistance does not change as long as the applied voltage remains the same.

Total resistance does not change as the individual resistors change.

Total resistance does not change because of the constant current.

Total resistance changes as the individual resistors change.

What is Energy?

Stages a product goes through from concept and used to eventually withdraw from the marketplace.

The ability to do work.

The flow of electrical power or charge.

Process by which, in a fluid being heated, the warmer part of the mass will rise and the cooler portions will sink.

Individual fuel cells that are combined in parallel.

A property of an object which determines the direction of heat flow when the object is placed in thermal contact with another object.

Individual fuel cells that are combined in series.

Calculate the total resistance of the circuit.

1020 ohms

531 ohms

103.1 ohms

346.6 ohms

1.31 ohms

5970 ohms

475.5 ohms

A machinist is using a 6 inch long wrench to tighten a 1/4 inch bolt. What is the moment (in foot-pounds) if he applies 175 pounds of force to the wrench?

43.75 ft-lb

-43.75 ft-lb

87.5 ft-lb

-153 ft-lb

262.5 ft-lb

-87.5 ft-lb

-262.5 ft-lb

153 ft-lb

A cart is being pushed up an inclined plane. The vertical height of the inclined plane is 7 feet. The effort force required to push the cart up the inclined plane is 6.3 lb. The cart weighs a total of 15 1/3 lbs. What is the IMA? (Precision 0.00)

3.43

0.28

0.41

2.43

3.57

0.29

What is the total current in the given in a simple circuit with 3 resistors (413 ohms, 1.3 kilo-ohms, and 0.513 kilo-ohms)? 

414.813 amps

2226 amps

594.3 amps

0.0289 amps

0.0114 amps

0.0054 amps

0.0202 amps

185.5 amps

A wheel driven wheel and axle system will have a mechanical advantage...

equal to zero

less than one

greater than one

equal to one

that is always negative

Calculate the ideal mechanical advantage of a given bolt with the thread notes of 5/16 24 NF. The distance from the center of the bolt to the end of the wrench being used to tighten the bolt is 1 foot and 1 inch. 

980.2

1.8

312

1960.4

7.5

130.7

3.4

261.4

1357.1

If mechanical advantage is greater than 1, proportionally _____ effort force is required to overcome the resistance force.

less

zero

twice

three times

more

equal

If you are using a simple gear train to increase the speed of a vehicle, which gear should be attached to the wheel axle?

higher torque

idler

compound

largest

smallest

What unit is constant in a series circuit?

resistance

valence electrons

ohms

voltage

energy

power

current

What is d2 if the bears are in static equilibrium?

2.5 ft

0.15625 ft

2 ft

2.25 ft

250 ft

4 ft

6.4 ft

A motor running a winch system can lift a 3N load 6 meters in 60 seconds while running at an average of 9 volts and drawing 500 mA. What is the efficiency of the system?

85%

30%

16.8%

4.7%

6.67%

0.15%

Calculate the ideal mechanical advantage of the lever shown.

0.41

14.22

0.45

2.44

2

2.91

0.5

If you lift a weight 10 inches using a pulley system with 8 supporting strands, what length of rope (in inches) would you have to pull?

80 in

0.8 in

10 in

8 in

800 in

Calculate the resistance force if the lever is in static equilibrium.

41.25 lb

5.45 lb

37.25 lb

44.25 lb

11 lb

39.75 lb

Calculate the total gear ratio of the gear train if gear A is the driver.

10

5

0.1

4

2.5

20

What is the IMA for the pulley shown?

5

6

4

2

3

1

The electric winch is powered by an 18V battery. The winch lifts the weight shown a total of 13 meters and draws a total of 20 Amps. the weight is 210 Newtons. It takes a total of 17 seconds. What is the Power Out for the given scenario?

360 watts

260 watts

160.6 watts

222 watts

2730 watts

21.2 watts

196 watts

Which of the following best describes the work done by a constant force on an object?

Work is the amount of force applied regardless of the distance the object moves.

Work is calculated as the product of force and distance only when an object moves in a perpendicular direction to the force.

Work is equal to the force applied on the object times the distance moved by the object in the direction of the force.

Work is the measure of energy transferred to an object when the object remains stationary.