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MECHATRONICS > mecha finals > Flashcards

mecha finals Flashcards

1
Q

which of the following where characteristics of mechatronic products and system?
a) functional interaction between mechanical, electronic, and information technologies
b) special interaction of subsystems in one physical unit
c) intelligence related to the control functions of the mechatronic system
d) all of the above

A

d

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2
Q

filter that allows low frequencies and stops high frequencies

A

a)low pass filter

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3
Q

type of signal conditioning device excellent for noise isolation because of switching circuits are electrically isolated

A

c) opto-isolator

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4
Q

ladder diagram

A

b or d

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4
Q

type of element which consists of an element that changes its state when it is close to, but never touching

A

b) proximity sensor

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5
Q

The following are some advantages of pneumatic system over hydraulic system

A

D. High Power Output

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6
Q

PLC can be ________ in plant to change the sequence of operation

A

c programmed and reprogrammed

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7
Q

an embedded system has RAM memory ____

A

a) for storing the variables during prgram run

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7
Q

not example of mechatronic system

A

b) bimetallic strip

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8
Q

type of motor operates without slip?

A

a) Synchronous motor

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9
Q

transducer is used for measuring linear displacement and functions similarly to a transformer with primary, secondary windings, and a movable iron core?

A

a) LVDT

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10
Q

type of filter allows frequencies outside a certain frequency band and attenuates frequencies within the band?

A

c) Band-reject filter

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11
Q

sensor typically consists of a lever that, when depressed, creates a mechanical contact to close an electrical connection?

A

a) Microswitch

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12
Q

What type of actuator system uses liquid as the working medium?

A

a) Hydraulic actuator system

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13
Q

variable resistance that can be used to measure angular position

A

potentiometer

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14
Q

device that converts motion into a sequence of digital pulses

A

c) digital optical encoder

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15
Q

Which of the following can be the output of PLC?

A

d) All the (1), (2), (3), (4), (5), and (6)

15
Q

A microcontroller at least should consist of:

A

c) CPU, RAM, ROM, I/O devices, serial and parallel ports and timers

16
Q

What are the most appropriate criteria for choosing the right microcontroller for our choice?

A

d) All of these

17
Q

Which phase of a mechatronics system consists of hardware designing?

A

a) Prototyping

17
Q

The switching mechanism used for electric motors that automatically releases when the motor has attained speed near to its full speed:

A

b) Centrifugal switch

18
Q

Why are microcontrollers not called general-purpose devices?

A

b) Because they are meant to do a single work at a time

19
Q

______ is the rotor winding that carries current and induces a rotor magnetic field.

A

c) Armature

20
Q

the capability of convention relay systems for complex operation is ______ that of the PLCs.

A

a) poor than

21
Q

part of dc motor which the current is supplied to the rotor

A

b) carbon brush

21
Q

microcontrollers are ____ than the PLCs

A

c) portable and cheaper

21
Q

root words of mechatronics

A

c) mechanics

22
Q

Which of the following cannot be an input that is given to the PLC?

a) Manual switches
b) Relays
c) Sensors
d) None of the above

A

b) Relays

23
Q

What is the file extension that is loaded in a microcontroller for executing any instruction?

a) .doc
b) .hex
c) .txt
d) .dll

A

b) .hex

23
Q

A type of filter that allows high frequencies and rejects low frequencies:

A

) High-pass filter

24
Q

Valve specifications are usually in the form x/y, where y stands for:

A

d) Number of positions

25
Q

Valve specifications are usually in the form x/y, where x stands for:

A

c) number of ports

26
Q

part of a rotor of a dc motor that delivers current through the armature windings

A

b) commutator

27
Q

Is a semiconductor device =, available in probes of different shapes and sizes, whose resistance changes exponentially with temperature

A

d. thermistor

27
Q

A buffer amplifier has gain of

A

b. unity

28
Q

Servo motor is a typical example of

A

d. mechatronic system

29
Q

The output module of the Plc can be

A

d. all of these

30
Q

A type of filter which allows frequencies within the band and blocks frequencies outside the band

A

c. band-pass filter

31
Q

A type of electric motor usually used from small to very large loads

A

C. squirrel cage induction motor

32
Q

Which of the following statements is true?

A

c. both of these are true

MECHATRONICS (6 decks)

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