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POE Final Practice Exam

Total questions: 50

Worksheet time: 31mins

Name
Class
Date
1.

Which of the following simple machines provides mechanical advantage by increasing the distance over which a force is applied?

a)

Wedge

b)

Lever

c)

Pulley

d)

Wheel and axle

2.

The ratio of output force to input force is known as:

a)

Efficiency

b)

Ideal Mechanical Advantage

c)

Actual Mechanical Advantage

d)

Work

3.

A lever with the fulcrum between effort and load is a:

a)

1st class lever

b)

2nd class lever

c)

3rd class lever

d)

4th class lever

4.

A ramp is an example of what type of simple machine?

a)

Screw

b)

Wedge

c)

Inclined plane

d)

Pulley

5.

If a pulley system has 4 supporting strands, the Ideal Mechanical Advantage (IMA) is:

a)

1

b)

2

c)

3

d)

4

6.

A gear train increases speed when the:

a)

Driver is larger than the driven gear

b)

Driver is smaller than the driven gear

c)

Gears are the same size

d)

Gears rotate in opposite directions

7.

In a series circuit, the total resistance is:

a)

Lower than any resistor

b)

The sum of all resistors

c)

Equal to the highest resistor

d)

Independent of the resistors

8.

Which circuit arrangement allows components to operate even if one branch fails?

a)

Series

b)

Parallel

c)

Combination

d)

Open

9.

Current in a parallel circuit:

a)

Is equal in every branch

b)

Splits among the branches

c)

Is zero in all open branches

d)

Cannot be measured

10.

Kirchhoff’s Voltage Law (KVL) states:

a)

The total current entering a node equals the total leaving

b)

Voltage around a closed loop adds to zero

c)

Power must be conserved

d)

Resistance is constant across a circuit

11.

A voltmeter is placed:

a)

In series

b)

In parallel

c)

Either one

d)

It depends on current direction

12.

Splits across each resistor

a)

Splits across each resistor

b)

Equals current multiplied by resistance only in the first resistor

c)

Is doubled by adding more resistors

13.

When measuring current, the multimeter must be placed:

a)

In series with the load

b)

In parallel with the load

c)

Across the power source

d)

Anywhere in the circuit

14.

To measure resistance properly:

a)

Power must be on

b)

Power must be off

c)

Multimeter must be connected in series

15.

Dial calipers are capable of measuring to the nearest:

a)

0.1 in

b)

0.01 in

c)

0.001 in

d)

0.0001 in

16.

Which part of a dial caliper measures inside dimensions?

a)

Depth rod

b)

Step gauge

c)

Inside jaws

d)

Outside jaws

17.

Extrude Remove is used to:

a)

Add material

b)

Cut away material

c)

Measure thickness

d)

Apply constraints

18.

A fillet is used to:

a)

Create sharp edges

b)

Round interior or exterior edges

c)

Hollow out an object

d)

Split a part

19.

Adding more resistors in parallel decreases total resistance.

a)

True

b)

False

20.

A simple machine can reduce the amount of work required.

a)

True

b)

False

21.

Current is the same everywhere in a series circuit.

a)

True

b)

False

22.

Dial calipers can measure inside, outside, and depth.

a)

True

b)

False

23.

A multimeter can measure voltage without being placed in series.

a)

True

b)

False

24.

An open circuit has no current flow.

a)

True

b)

False

25.

A 3rd class lever always has the effort between the load and fulcrum.

a)

True

b)

False

26.

Resistors connected end-to-end. __________

a)

Series connection

b)

Parallel connection

c)

Open circuit

d)

Short circuit

27.

Mechanical advantage equation. __________

a)

Mechanical Advantage = Output Force / Input Force

b)

Mechanical Advantage = Input Force / Output Force

c)

Mechanical Advantage = Output Force x Input Force

d)

Mechanical Advantage = Input Force - Output Force

28.

Onshape feature to add material. __________

a)

Extrude

b)

Revolve

c)

Fillet

d)

Chamfer

29.

Pulley that moves with the load. __________

a)

Movable pulley

b)

Fixed pulley

c)

Compound pulley

d)

Block and tackle

30.

Law stating current entering a node equals current leaving. __________

a)

Kirchhoff's Current Law (KCL)

b)

Ohm's Law

c)

Faraday's Law

d)

Newton's Law

31.

Gear that drives the other gears. __________

a)

Driver gear

b)

Follower gear

c)

Idler gear

d)

Pinion gear

32.

What is the definition of 'Series circuit'?

a)

A circuit in which the components are connected end-to-end so that the current flows through each component in turn.

b)

A circuit in which the components are connected in parallel and the current splits into multiple paths.

c)

A circuit that only contains resistors and no other components.

d)

A circuit that does not allow any current to flow through it.

33.

What does the symbol 'Ω' represent?

a)

Ohm, the unit of electrical resistance.

b)

Ampere, the unit of electric current.

c)

Volt, the unit of electric potential.

d)

Watt, the unit of power.

34.

What is a 'Driver gear'?

a)

The gear that transmits power to another gear in a gear train.

b)

The gear that receives power from another gear in a gear train.

c)

A gear used only for decorative purposes in machinery.

d)

A gear that is always stationary in a gear train.

35.

What is a 'Dial caliper'?

a)

A precision measuring instrument with a dial readout used to measure dimensions.

b)

A type of wrench used for tightening bolts.

c)

A device used to measure electrical current.

d)

A tool for cutting metal sheets.

36.

Mason, Isla, and Nora are working on a physics project together. They need to calculate the total resistance (RT) across a circuit they've built for their project. What is the RT of their circuit?

a)

3 kΩ

b)

10 kΩ

c)

13 kΩ

d)

18 kΩ

37.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

38.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

39.
a)
4.57
b)
4.56
c)
.448
d)
4.58
40.
a)
9.815
b)
8.915
c)
9.9115
d)
9.825
41.
a)
2.192
b)
3.192
c)
3.292
d)
3.922
42.
a)
0.622
b)
5.662
c)
5.622
d)
0.662
43.
a)
0.987
b)
4.887
c)
4.987
d)
0.887
44.
In case of an error, an engineer should draw a single line through the incorrect data, NOT use correction fluid, and initial and date ALL corrections.
a)
True
b)
False
45.
The Engineering Notebook can be used in a court of law to establish intellectual property ownership.
a)
True
b)
False
46.
An engineer should use Engineering Notebooks to write down every idea, drawing, computation/calculation, observation, meeting notes/class notes, questions/answers, and interactions with other people or organizations.
a)
True
b)
False
47.
Why does the Engineering Notebook have to be in pen or permanent ink?
a)
Because the engineering notebook can be used during legal proceedings during a patent dispute.
b)
Because pencil is for middle and elementary school.
c)
You should NOT use a pen. 
d)
Because it makes you look more professional.
48.
Find total resistance
total current
and the voltage through resistor 3.
a)
60 Ohms, 0.4 A,  8 V
b)
60 Ohms, 2.5 A,  4 V
c)
90 Ohms, 2.5 A, 24 V
d)
60 Ohms, 0.4 A, 24 V
49.

If a small gear with 12 teeth turns a big gear with 36 teeth, how many times must the small gear turn for the big gear to turn once?

a)

1 time

b)

2 times

c)

3 times

d)

4 times

50.

What is a "gear train"?

a)

A type of toy train

b)

A single gear used for decoration

c)

A set of two or more gears working together

d)

A tool for measuring gear size

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