Instrument mechanic theory sem july 15
What device is similar to an RTD bul has a negative temperature coefficient?
a) Strain gauge b) Negative-type RTD c) Thermistor d) Thermocouple
Temperature sensing can be achieved by the use of:
a) Thermocouples c) Thermistors b) RTDs d)Allof these
What is the moving part of a linear variable differential transformer?
a) Primary e) Diaphragm
b) Secondary d) Core
Which type of controller increases the stability of the system by keeping it at a consistent
selling?
a) Derivative c) On-Off
b) Proportional d) Integral
Which of the following is most suitable for measuring very high temperatures?
a) Thermocouple c) Thermometry thermometer
b) Pyrometer d) Platinum resistance thermometer
A....................... is usually a display device used to produce a paper record of analog wave form.
a) Graphic pen recorder c) X-Y recorder
b) Electron microscope d) Oscilloscope
PID stands for:
a) Proportionally Integrated Diode
b) Power Indication Display
c) Proportional Integral Derivative
d) Phase Inverting Driver
A programmable logic controller (PLC) normally replaces the following in control
applications:
a) Computer numerical control c) Humans
b) Distributed process control d) Relay control panel
Which of the following is not true of thermocouples?
a) They do not use a reference junction' c) They are composed ofdissimilar metals
b') They generate a small voltage d) They can be calibrated
What type of device is a sensor?
a) Input e) Output
b) Process d) Feedback
Physical or logical arrangement of network is :
a) Topology c) Networking
b) Routing d) None of these
In this topology there is a central controller or hub:
a) Star c) Ring
b) Mesh d) Bus
This topology requires multipoint connection:
a) Star c) Ring
b) Mesh d)Bus
Data communication system spanning states, countries, or the whole world is:
a) LAN c) MAN
b) WAN d) None of these
Data communication system within a building or campus is:
a) LAN c) MAN
b) WAN d) None of these
Expand WAN
a) World area network
b) Wide area network
c) Web area network
d) None of these
Which transmission media has the highest transmission speed in a network?
a) Coaxial cable c) Optical fibre
b) Twisted pair cable d) Electrical cable
How many pins of R.I-45 connectors are required when used in lOBase-T networks?
a) 8 c) 2
b) 4 d) 6
A programmable controller is composed of two basic sections:
a) CPU and the input/output system
b) The processor and the input/output system
c) The memory system and the CPU
d) Input/output system
What does the term PLC stand for?
a) Programmable Lift Computer
b) Program List Control
c) Programmable Logic Controller
d) Piezo Lamp Connector
For whal purpose Pi rani gauge is used?
a) Low pressure measurement c) Medium pressure measurement
b) High pressure measurement d) All of these
psi in terms of pressure stands for
a) Per Square inch
b) Pounds per square inch
c) Pressure square inch
d) Perpendicular square inch
Low pressure unit is expressed in
a) Pound c) Torr
b) Kilogram . d) Gram
When designing a jacketed Container that will contain a highly exothermic reaction, what
type of actuator should be used to operate the valve controlling the cooling water?
a) Pneumatic c) Hydraulic
b) Motion conversion . d) Electric
Which of the following is a good application for a diaphragm valve?
a) Inlet to a container where precise volumes of reactants are required
b) Food industry where ease of cleaning is important
c) Steam heating line for jacketed Container
d) Vent on a signal line to release pressure to atmosphere
An LVDT uses a core. .
a) Moving displacement core c) Soft ferrite core
b) Variable core d) Hard iron fixed
In broadband pyrometer input radiation of________wavelength is used.
a) Heat radiation c) Infrared radiation
b) Source material heat radiation d) Ultraviolet radiation
Bellows convert pressure into ____
a) Air displacement
b) Differentia! blade spring piate displacement
c) Water displacement
d) Liquid displacement
A transducer converts from one form to another.
a) Sound c) Energy
b) Heat d) Electricity
The range of pH of acidic solution is between- ..............&....................
a) 5 to 10 c) 0to 6
b) 10 to 15 d) 7 to 14
Unit of Temperature in FPS System is:
a) Centigrade c) Kelvin
b) Fahrenheit d) Celsius
Unit of force in FPS system is:
a) Newton c) Pound
b) Kg. d) Gram
Control valve is a type of device in control system:
a) I npul device c) Output device
b) Feedback device d) Control clement
When using a stepper motor to drive a conveyor belt, what would increase the speed of the
conveyor belt?
a) Increasing the output voltage c) Increasing the frequency of pulses
b) Decreasing the output voltage d) Decreasing the frequency of pulses
If a linear actuator moves an external load, the work done by (he actuator on the external
load is;
a) Linear mechanical work c) Angular fluid work
b) Linear fluid work d) Angular mechanical work
EDDL stands for:
a) Electronic device description language b) Electronic drive description language
c) Electrically device displacement d) None of these
HART device in control protocol full form is:
a) High address road transmission c) Heat arm rate transfer
b) Highway addressable remote transducer d) Halt array rale transfer
RTU means:
a) Range transmitter unit
b) Remote Transmitting Unit
c) Rota-meter Trans Unit
d) Remote terminal Unit
SCADA process control system means:
a) Supervisory control and data
b) Super control and data analysis
c) Sub control and data analysis
d) Supervisory control and data analysis
D.C.S. process control system means:
a) Data control system c) Data core system
b) Distributed control system d) Damaged control system
Standard Current process parameter sensor range is:
a) 01mA. To 10mA c) 01mA. To 100mA
b) 04mA. To 20mA d) 10mA. To 20mA
Load cell is transducer for:
a) Flow sensor
b) Temperature sensor
c) Weight sensor
d) Level sensor
these orifice plates are used for ideal liquid as well as gases and steam services:
a) Co-centric c) Eccentric
b) Segmental d) Square
Solenoid valve in process control is:
a) Input device c) Feedback device
b) Output device d) Timer device
Proximity switches are used for:'
a) Plow sensor
b) Level sensor
c) Pressure sensor
d) Temperature sensor
Pyrometer is used to measure:
a) High pressure c) High voltage
b) H igh temperature d) None of these
Standard voltage range for electrical sensor is:
a) 5 volt to 10 volt c) 1 volt to 10 volt
b) 2 volt to 10 volt d) 0.5 volt to 5 volt
In pj-ocess control P to I Convenor means:
a) Pressure to current convenor c) Pressure to Intensity converter
b) Pressure to Indicator value convenor d) Pulse to inertia convenor
Rotameter is used for measurement of:
a) Level c) Volume
b) Flow d) Pressure
In process control HMI means:
a) Human motion indicator c) Hot machine indicator
b) Human Machine interface d) Hall machine interface
What device is similar to an RTD bul has a negative temperature coefficient?
a) Strain gauge b) Negative-type RTD c) Thermistor d) Thermocouple
Temperature sensing can be achieved by the use of:
a) Thermocouples c) Thermistors b) RTDs d)Allof these
What is the moving part of a linear variable differential transformer?
a) Primary e) Diaphragm
b) Secondary d) Core
Which type of controller increases the stability of the system by keeping it at a consistent
selling?
a) Derivative c) On-Off
b) Proportional d) Integral
Which of the following is most suitable for measuring very high temperatures?
a) Thermocouple c) Thermometry thermometer
b) Pyrometer d) Platinum resistance thermometer
A....................... is usually a display device used to produce a paper record of analog wave form.
a) Graphic pen recorder c) X-Y recorder
b) Electron microscope d) Oscilloscope
PID stands for:
a) Proportionally Integrated Diode
b) Power Indication Display
c) Proportional Integral Derivative
d) Phase Inverting Driver
A programmable logic controller (PLC) normally replaces the following in control
applications:
a) Computer numerical control c) Humans
b) Distributed process control d) Relay control panel
Which of the following is not true of thermocouples?
a) They do not use a reference junction' c) They are composed ofdissimilar metals
b') They generate a small voltage d) They can be calibrated
What type of device is a sensor?
a) Input e) Output
b) Process d) Feedback
Physical or logical arrangement of network is :
a) Topology c) Networking
b) Routing d) None of these
In this topology there is a central controller or hub:
a) Star c) Ring
b) Mesh d) Bus
This topology requires multipoint connection:
a) Star c) Ring
b) Mesh d)Bus
Data communication system spanning states, countries, or the whole world is:
a) LAN c) MAN
b) WAN d) None of these
Data communication system within a building or campus is:
a) LAN c) MAN
b) WAN d) None of these
Expand WAN
a) World area network
b) Wide area network
c) Web area network
d) None of these
Which transmission media has the highest transmission speed in a network?
a) Coaxial cable c) Optical fibre
b) Twisted pair cable d) Electrical cable
How many pins of R.I-45 connectors are required when used in lOBase-T networks?
a) 8 c) 2
b) 4 d) 6
A programmable controller is composed of two basic sections:
a) CPU and the input/output system
b) The processor and the input/output system
c) The memory system and the CPU
d) Input/output system
What does the term PLC stand for?
a) Programmable Lift Computer
b) Program List Control
c) Programmable Logic Controller
d) Piezo Lamp Connector
For whal purpose Pi rani gauge is used?
a) Low pressure measurement c) Medium pressure measurement
b) High pressure measurement d) All of these
psi in terms of pressure stands for
a) Per Square inch
b) Pounds per square inch
c) Pressure square inch
d) Perpendicular square inch
Low pressure unit is expressed in
a) Pound c) Torr
b) Kilogram . d) Gram
When designing a jacketed Container that will contain a highly exothermic reaction, what
type of actuator should be used to operate the valve controlling the cooling water?
a) Pneumatic c) Hydraulic
b) Motion conversion . d) Electric
Which of the following is a good application for a diaphragm valve?
a) Inlet to a container where precise volumes of reactants are required
b) Food industry where ease of cleaning is important
c) Steam heating line for jacketed Container
d) Vent on a signal line to release pressure to atmosphere
An LVDT uses a core. .
a) Moving displacement core c) Soft ferrite core
b) Variable core d) Hard iron fixed
In broadband pyrometer input radiation of________wavelength is used.
a) Heat radiation c) Infrared radiation
b) Source material heat radiation d) Ultraviolet radiation
Bellows convert pressure into ____
a) Air displacement
b) Differentia! blade spring piate displacement
c) Water displacement
d) Liquid displacement
A transducer converts from one form to another.
a) Sound c) Energy
b) Heat d) Electricity
The range of pH of acidic solution is between- ..............&....................
a) 5 to 10 c) 0to 6
b) 10 to 15 d) 7 to 14
Unit of Temperature in FPS System is:
a) Centigrade c) Kelvin
b) Fahrenheit d) Celsius
Unit of force in FPS system is:
a) Newton c) Pound
b) Kg. d) Gram
Control valve is a type of device in control system:
a) I npul device c) Output device
b) Feedback device d) Control clement
When using a stepper motor to drive a conveyor belt, what would increase the speed of the
conveyor belt?
a) Increasing the output voltage c) Increasing the frequency of pulses
b) Decreasing the output voltage d) Decreasing the frequency of pulses
If a linear actuator moves an external load, the work done by (he actuator on the external
load is;
a) Linear mechanical work c) Angular fluid work
b) Linear fluid work d) Angular mechanical work
EDDL stands for:
a) Electronic device description language b) Electronic drive description language
c) Electrically device displacement d) None of these
HART device in control protocol full form is:
a) High address road transmission c) Heat arm rate transfer
b) Highway addressable remote transducer d) Halt array rale transfer
RTU means:
a) Range transmitter unit
b) Remote Transmitting Unit
c) Rota-meter Trans Unit
d) Remote terminal Unit
SCADA process control system means:
a) Supervisory control and data
b) Super control and data analysis
c) Sub control and data analysis
d) Supervisory control and data analysis
D.C.S. process control system means:
a) Data control system c) Data core system
b) Distributed control system d) Damaged control system
Standard Current process parameter sensor range is:
a) 01mA. To 10mA c) 01mA. To 100mA
b) 04mA. To 20mA d) 10mA. To 20mA
Load cell is transducer for:
a) Flow sensor
b) Temperature sensor
c) Weight sensor
d) Level sensor
these orifice plates are used for ideal liquid as well as gases and steam services:
a) Co-centric c) Eccentric
b) Segmental d) Square
Solenoid valve in process control is:
a) Input device c) Feedback device
b) Output device d) Timer device
Proximity switches are used for:'
a) Plow sensor
b) Level sensor
c) Pressure sensor
d) Temperature sensor
Pyrometer is used to measure:
a) High pressure c) High voltage
b) H igh temperature d) None of these
Standard voltage range for electrical sensor is:
a) 5 volt to 10 volt c) 1 volt to 10 volt
b) 2 volt to 10 volt d) 0.5 volt to 5 volt
In pj-ocess control P to I Convenor means:
a) Pressure to current convenor c) Pressure to Intensity converter
b) Pressure to Indicator value convenor d) Pulse to inertia convenor
Rotameter is used for measurement of:
a) Level c) Volume
b) Flow d) Pressure
In process control HMI means:
a) Human motion indicator c) Hot machine indicator
b) Human Machine interface d) Hall machine interface
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