mecha finals Flashcards
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
d
filter that allows low frequencies and stops high frequencies
a)low pass filter
type of signal conditioning device excellent for noise isolation because of switching circuits are electrically isolated
c) opto-isolator
ladder diagram
b or d
type of element which consists of an element that changes its state when it is close to, but never touching
b) proximity sensor
The following are some advantages of pneumatic system over hydraulic system
D. High Power Output
PLC can be ________ in plant to change the sequence of operation
c programmed and reprogrammed
an embedded system has RAM memory ____
a) for storing the variables during prgram run
not example of mechatronic system
b) bimetallic strip
type of motor operates without slip?
a) Synchronous motor
transducer is used for measuring linear displacement and functions similarly to a transformer with primary, secondary windings, and a movable iron core?
a) LVDT
type of filter allows frequencies outside a certain frequency band and attenuates frequencies within the band?
c) Band-reject filter
sensor typically consists of a lever that, when depressed, creates a mechanical contact to close an electrical connection?
a) Microswitch
What type of actuator system uses liquid as the working medium?
a) Hydraulic actuator system
variable resistance that can be used to measure angular position
potentiometer
device that converts motion into a sequence of digital pulses
c) digital optical encoder
Which of the following can be the output of PLC?
d) All the (1), (2), (3), (4), (5), and (6)
A microcontroller at least should consist of:
c) CPU, RAM, ROM, I/O devices, serial and parallel ports and timers
What are the most appropriate criteria for choosing the right microcontroller for our choice?
d) All of these
Which phase of a mechatronics system consists of hardware designing?
a) Prototyping
The switching mechanism used for electric motors that automatically releases when the motor has attained speed near to its full speed:
b) Centrifugal switch
Why are microcontrollers not called general-purpose devices?
b) Because they are meant to do a single work at a time
______ is the rotor winding that carries current and induces a rotor magnetic field.
c) Armature
the capability of convention relay systems for complex operation is ______ that of the PLCs.
a) poor than
part of dc motor which the current is supplied to the rotor
b) carbon brush
microcontrollers are ____ than the PLCs
c) portable and cheaper
root words of mechatronics
c) mechanics
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
b) Relays
What is the file extension that is loaded in a microcontroller for executing any instruction?
a) .doc
b) .hex
c) .txt
d) .dll
b) .hex
A type of filter that allows high frequencies and rejects low frequencies:
) High-pass filter
Valve specifications are usually in the form x/y, where y stands for:
d) Number of positions
Valve specifications are usually in the form x/y, where x stands for:
c) number of ports
part of a rotor of a dc motor that delivers current through the armature windings
b) commutator
Is a semiconductor device =, available in probes of different shapes and sizes, whose resistance changes exponentially with temperature
d. thermistor
A buffer amplifier has gain of
b. unity
Servo motor is a typical example of
d. mechatronic system
The output module of the Plc can be
d. all of these
A type of filter which allows frequencies within the band and blocks frequencies outside the band
c. band-pass filter
A type of electric motor usually used from small to very large loads
C. squirrel cage induction motor
Which of the following statements is true?
c. both of these are true
