ROBOTICS FINAL EXAM

Which of the following species of wood is classified as softwood?

Spruce

Civil Engineers ……

Design bridges, roadways and dams

The hardness of steel can be increased by all of these methods except….

stretching

If you received three full time job offers, one for $12 per hour, one for $1,400 per month, and one for $26,500 per year, which job should you take if salary was your only consideration?

$26,500 per year

Mike rode his bike 600 miles and he carried a spare tire on the trip. To provide equal wear on all 3 tires, he changed his tires while traveling. How many miles of wear did each tire accumulate?

400

A temperature of 40 degrees C is equal to ….. degrees F.

104

What units are used to measure electrical current?

Amperes

Robots that run by themselves without human control must utilize

a microcontroller and autonomous programming

In which of the following settings would wearing safety eye wear NOT be necessary?

When working the copy machine

Safety ORANGE respresents

Safety guards and pinch points

A robotic arm for an assembly line would be created by a(n)

team of engineers from several disciplines working together

The following are 4 steps of the Engineering Design Cycle. If you place them in order, which of the following would be step 2?

Brainstorm

If the X position is the 3.5, the Z position is -0.3 and the Y position is 2, the coordinates should be written:

(3.5, 2, -0.3)

A 3 view or shop drawing is the same thing as

an orthographic projection

The aspect ratio of a wing is useful to engineers because it helps to calculate lift and drag. What is the aspect ratio of a rectangular wing if the wingspan is 20 meters and the width of the wing, known as the chord length, is 2 meters?

10

If an airplane is not accelerating and is climbing in altitude, which is true?

Lift is greater than Weight and Drag is equal to Thrust

Use the Ideal Gas Law to determine the pressure in atmospheres of a gas, given a volume of 0.886 L, the number of molecules, n + 0.00801 mol, and temperature of 311 K. The gas constant, R, is 0.008205 L degrees atm/mol x K.

0.231 atm

Determine the percent composition by mass of 100-gram salt solution which contains 30 grams of salt.

30%

Prestressed concrete is concrete that is

used in areas for heavy loads to allow bending and flexing

Trusses work because the individual members

link and reallocate the loads of tension and compression evenly in a structure

A motor on a train converts 180,000 J of electrical energy into 80,000 J of kinetic energy. How efficient is the motor?

50%

Which of the following is not measured by frequency?

Heat

Frequency is measured in

hertz

Which of the following is not an engineering drawing?

Artistic rendering

The mechanical advantage of a machine is

the distance the output moves divided by the distance the input moves

According to the second law of thermodynamics,

entropy will increase forever

A tensile test consists of a material that is subject to

uniaxial tension until failure

Pneumatics systems require

a compressor

Which of these is not a common programming language?

SQL

Which is the binary representation of 11?

00001011

If the inputs of this cate are 0 and 1, what will the output be?

1

how much work is done on a 15 N bowling ball when it is moved 20 meters across a long room?

300 J

a lever is used to lift a heavy box that has an input arm of 2m and an output arm of 0.4m. what is the IMA of the lever?

5.1

If an input force of 112N is applied to the handles of a wheelbarrow to lift a total weight of 350N, what is the AMA of the wheelbarrow?

3.125

Mason needs to remove a tree stump. to do this, he puts his whole body weight of 155N on one end of a long beam. If the AMA of the lever Mason is using is 2.5, what is the weight of the stump?

387.5 N

What is the efficiency of a cyclist who expends 700J of work for her bike to produce 67J of useful work?

9.6%

A 12 tooth gear is placed on a motor followed by a 6 tooth gear, and a 4 tooth gear. What is the total gear ratio?

3:1

If there are 4 gears rotating in sequence, and the first gear is spinning clockwise, what direction is the last gear spinning?

counterclockwise

Two 2.0 ohm resistors and three 7.9 ohm resistors are connected in a parallel circuit. what is the total resistance?

0.7 ohms

Household circuits are wired in parallel, this is so appliances will have the same…

voltage

In what type of circuit is the current always the same through each resistor?

series

which of these is a common programming language for coding?

python

what service do you need to connect to the internet?

isp

which computer memory device loses data when you turn it off?

RAM

which type of coding error occurs from spelling mistakes?

syntax

which type of malware does not need a user to activate it or spread it on a network?

worm