Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

DTE November Test > Flashcards > Flashcards

Flashcards

1
Q

What is a structure that relies of the weight of the material for their strength and support. Typically made with stone, brick, soil and concrete blocks?

A

Mass structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are the key features of a mass structure?

A

They rely on the weight of the material for their strength and support.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are mass structures usually made of?

A

Stone, brick, soil and concrete blocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What are framed structures?

A

A structure that is made by connecting individual parts called members of material.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What structure is made by connecting individual parts called members?

A

Framed structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Examples of framed structures

A

Bridges, roof truss

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Examples of mass structures

A

Pyramids, igloos, water dams

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What structure is made from thin materials to create a hollow structure?

A

Shell structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a shell structure?

A

A structure made from thin materials that create a hollow structure

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are shell structures typically made of?

A

Sheet steel or plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Examples of shell structures

A

A car body, aircraft fuse cage.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What structure is naturally formed and grow and erode over time?

A

Natural structures

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What are natural structures?

A

Naturally formed structures that grow and erode over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Examples of natural structures

A

Skeletons, trees and Grand Canyon.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What linkage forms a Z shape

A

Reverse motion linkages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What linkage forms a /-/ shape

A

Parallel linkages

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What linkage forms a quarter circle shape

A

Bell crank linkage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Do materials react better when being crushed or being pulled apart?

A

Crushed

19
Q

What is the rise in a cam?

A

The part of the cam that causes the follower to rise

20
Q

What is a dwell in a cam?

A

When the cam rotates but the follower does not rise or fall

21
Q

What is the fall in a cam?

A

The part of the cam that causes the follower to fall

22
Q

What is one cycle in a cam?

A

One rotation or revolution of the cam.

23
Q

Does an ellipse cam ever dwell

A

No

24
Q

Main characteristics of a snail cam

A

It has a very sharp fall and if put on the wrong way it will break.

25
Q

What are the 4 types of rotation?

A

Rotary, linear, oscillating, reciprocating

26
Q

What does a displacement diagram show.

A

It shows the displacement of the cam at different points of rotation.

27
Q

If a driver and driven goes from small to big what happens to the speed and torque

A

Less speed and more torque.

28
Q

If a driver and driven go from big to small then what happens to the speed and torque

A

It will have more speed and less torque

29
Q

Velocity ratio diameter

A

Diameter of driven pulley/diameter of driver pulley

30
Q

Velocity ratio torque

A

Output torque/input torque

31
Q

Velocity ratio speed

A

Input speed/ output speed

32
Q

What is the formula for torque

A

Torque = Force(F) x Distance(M)

33
Q

What are spur gears?

A

Spur gears are gears that push together when rotating and have teeth .

34
Q

What are the advantages of spur gears?

A

Slipping doesn’t happen because of the positive drive, less parts required because there is no need for a belt or chain, low cost to get.

35
Q

What are the disadvantages of spur gears?

A

Suited to low speeds, the gear teeth experience a lot of stress, can’t transfer power between non parallel shafts, make a lot of noise when operating at high speeds.

36
Q

What are gear trains?

A

A gear train is made up of more than 2 gears.

37
Q

What are idler gears?

A

An idler gear makes it so that the driver and the driven are rotating the same way.

38
Q

What are compound gears?

A

A number of gears that are fixed together and rotate at the same speed and share the same shaft.

39
Q

What are bevel gears?

A

Used to change direction of the drive in the gear system 90 degrees.

40
Q

What is torque in gears?

A

The turning force when the load F is applied at distance L away from the centre of rotation.

41
Q

What is the equation for torque in gears?

A

Torque = Force x Distance
T = N x mm

42
Q

What measurement is torque expressed in?

A

Torque is measured in Newton millimetres (Nmm).

43
Q

What is torque determined by

A

It is determined by the Distance and the Load

44
Q

What is a worm gear?

A

It is another way of changing the direction of the drive in a gear system 90 degrees. It is powered by a motor.

DTE November Test (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions