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vftitfg Flashcards

(81 cards)

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1
Q

A toothed wheel that changes speed or direction of motion

A

Gear

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2
Q

Teeth cut at an angle to the axis (not parallel)

A

Helical Gear

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3
Q

Used in conveyors, elevators, kilns

A

Worm Gear

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4
Q

Allows minor adjustment, load without concentrating stress on one tooth

A

Spur Gear

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5
Q

Pinion and ring gear axis are not intersecting

A

Hypoid Gear

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6
Q

Steering system gear system

A

Rack and Pinion

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7
Q

Non-intersecting, non-parallel shaft connection with high torque

A

Worm Gear

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8
Q

Oblique axis configuration

A

Hypoid Gear

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9
Q

Gear with teeth on the inside of a cylinder

A

Internal Gear

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10
Q

Gear base before teeth are cut

A

Gear Blank

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11
Q

Circle on which gear tooth geometry is based

A

Pitch Diameter

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12
Q

Distance between a point on one tooth and same point on next

A

Pitch

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13
Q

Pitch diameter ÷ number of teeth (metric gear sizing)

A

Module

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14
Q

Teeth per inch of pitch diameter

A

Diametral Pitch

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15
Q

Value equal to pitch diameter ÷ module

A

Number of Teeth

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16
Q

Distance from root of tooth to bottom of mating tooth space

A

Working Clearance

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17
Q

Distance from pitch circle to tooth top

A

Addendum

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18
Q

Sum of addendum and dedendum

A

Working Depth

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19
Q

Distance from pitch circle to bottom of tooth space

A

Dedendum

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20
Q

Energy per time for useful mechanical output

A

Power

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21
Q

Sensor that measures distance using infrared light

A

IR Sensor

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22
Q

Sensor that uses ultrasonic waves to detect objects

A

Ultrasonic Sensor

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23
Q

Output device that converts electrical signals into mechanical movement

A

Actuator

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24
Q

Device used to control motor direction and speed

A

Motor Driver

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25
Detects lines or light differences in sumobot applications
Line Sensor
26
Central processing unit of a robot
Microcontroller
27
Physical contact switch used for triggering inputs
Limit Switch
28
Motor that rotates continuously and is common in robots
DC Motor
29
Motor with precise step-by-step movement
Stepper Motor
30
Motor that rotates to a specific angle based on control signal
Servo Motor
31
The ratio of output torque to input torque in gears
Gear Ratio
32
Reduction gear used to increase torque
Gearbox
33
The axis around which a gear rotates
Gear Shaft
34
System that uses multiple gears to transmit power
Gear Train
35
Gear that transmits motion between intersecting axes
Bevel Gear
36
Type of gear with teeth cut straight and parallel to the axis
Spur Gear
37
System used to reduce speed and increase torque
Reduction Gear
38
Energy stored due to position or configuration
Potential Energy
39
Energy of motion
Kinetic Energy
40
Device that converts physical changes into electrical signals
Sensor
41
Electronic system that takes sensor input and makes decisions
Control System
42
A device that detects and measures physical parameters and converts them into signals for processing.
Sensor
43
A time-varying quantity (like voltage or light) that conveys information; can be analog or digital.
Signal
44
Categorizing sensors by power (active/passive), output (analog/digital), contact type, principle, or application.
Sensor Classification
45
Adjusting a sensor's output to match a standard or known value for accuracy.
Calibration
46
A resistor network used to measure small changes in resistance, especially in strain gauges.
Wheatstone Bridge
47
Built-in sensor in phones (like gyroscope or accelerometer) used for interaction and operation.
Sensor for Mobile Communication Device
48
A control loop mechanism using proportional, integral, and derivative values to minimize error.
PID (Proportional-Integral-Derivative)
49
How close a sensor’s measurement is to the actual value.
Accuracy
50
The difference between the true value and the calibrated sensor output.
Calibration Error
51
A condition where a sensor’s output depends on input history, not just the current input.
Hysteresis
52
Deviation from a straight-line relationship between input and output.
Non-Linearity Error
53
The sensor's ability to give the same output for repeated identical inputs.
Repeatability
54
A range of input where there is no change in output.
Dead Band
55
The smallest detectable change a sensor can measure.
Resolution
56
Ability of a device/system to perform consistently over time.
Reliability
57
The expected average time a component will function before failing.
MTTF (Mean Time to Failure)
58
Stress testing used to identify early-life failures in products.
HALT (Highly Accelerated Life Testing)
59
Deliberate over-stressing to determine failure mechanisms.
FOAT (Failure-Oriented Accelerated Testing)
60
Voltage generated due to a temperature difference between two different materials.
Seebeck Effect
61
Electrical charge produced in materials under mechanical stress (e.g., in vibration sensors).
Piezoelectricity
62
Gear with straight teeth used for parallel shaft transmission.
Spur Gear
63
Gear with angled teeth that engage more gradually, quieter and smoother.
Helical Gear
64
Gear used to transmit motion between intersecting shafts (often 90°).
Bevel Gear
65
A screw-like gear that meshes with a wheel gear, used for high torque.
Worm Gear
66
A compact gear system with a central sun gear, planets, and a ring gear.
Planetary Gear Train
67
The ratio of teeth between two meshing gears; affects speed/torque.
Gear Ratio
68
Small movement between gear teeth when changing direction.
Backlash
69
Imaginary circle where gear teeth effectively mesh.
Pitch Circle
70
Metric unit showing tooth size (pitch diameter ÷ teeth count).
Module (Gear)
71
Combining data from multiple sensors to improve accuracy/reliability.
Sensor Fusion
72
A sensor that converts position or motion into electrical signals.
Encoder
73
Measures rotation speed of shafts/disks in gear systems.
Tachometer
74
Detects nearby objects without contact (e.g., inductive/capacitive).
Proximity Sensor
75
Detects position changes to trigger actions in machines.
Limit Switch
76
System structure where output is fed back for control (e.g., in PID).
Feedback Loop
77
Output power ÷ input power, accounting for losses.
Gear Train Efficiency
78
Motor that moves in fixed steps, used for precision positioning.
Stepper Motor
79
Measures force/load, often used with gear-driven systems.
Load Cell
80
Loss of contact between gear teeth surfaces causing inefficiency.
Slip (Gear)
81
Ongoing health check of machines (vibration, heat, etc.).
Condition Monitoring

mechanical engineering (2 decks)

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