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Mechanical Measurements & Instrumentation MCQ

What does FM stand for?

Answer

Correct Answer: Factory Mutual Research Corporation

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What is a floppy disk?

Answer

Correct Answer: A small, flexible disk carrying a magnetic medium in which digital data is stored for later retrieval and use.

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What is the definition of "Flag?"

Answer

Correct Answer: A character that signals the termination of a transmission.

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What does "PROM" stand for in the context of firmware?

Answer

Correct Answer: Programmable Read-Only Memory

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What does a file refer to?

Answer

Correct Answer: A set of related records or data treated as a unit

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What is the Field of View?

Answer

Correct Answer: A volume in space defined by an angular cone extending from the focal plane of an instrument.

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What is a ferrule?

Answer

Correct Answer: A compressible tubular fitting that is compressed onto a probe inside a compression fitting to form a gas-tight seal.

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Which temperature is equal to 100° on the Fahrenheit scale?

Answer

Correct Answer: 212°

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How many degrees are in between the ice point and boiling point on the Fahrenheit scale?

Answer

Correct Answer: 180

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Erasable Programmable Read-Only Memory can be erased by _____ .

Answer

Correct Answer: Ultraviolet light or electricity

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What is the full form of Eprom?

Answer

Correct Answer: Erasable Programmable Read-Only Memory

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What does the acronym "EC" stand for in "Environmental Conditions?"

Answer

Correct Answer: All conditions to which a transducer may be exposed during shipping, storage, handling, and operation.

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What is enthalpy?

Answer

Correct Answer: The sum of the internal energy of a body and the product of its volume multiplied by the pressure.

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What is the End Point (Potentiometric)?

Answer

Correct Answer: The apparent equivalence point of a titration at which a relatively large potential change is observed.

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What is the apparent equivalence point of a titration?

Answer

Correct Answer: The point at which a relatively large potential change is observed.

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A process is said to be ________ when it absorbs heat.

Answer

Correct Answer: Endothermic

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What is emissivity?

Answer

Correct Answer: The ratio of energy emitted by an object to the energy emitted by a blackbody at the same temperature.

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What is the unit of EMF?

Answer

Correct Answer: Volt

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What does EMF stand for?

Answer

Correct Answer: Electromotive force

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What is the abbreviation for Electronic Industries Association?

Answer

Correct Answer: EIA

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What is the full form of EIA?

Answer

Correct Answer: Electronic Industries Association

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Which of the following is NOT an element of electomotive force?

Answer

Correct Answer: Cell voltage

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What is electrical interference?

Answer

Correct Answer: Electrical noise induced upon the signal wires that obscures the wanted information signal.

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What does the term "echo" mean in the context of computer networks?

Answer

Correct Answer: To reflect received data to the sender.

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What is the word for when data is reflected back to the sender?

Answer

Correct Answer: Echo

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What is Deviation?

Answer

Correct Answer: The difference between the value of the controlled variable and the value at which it is being controlled.

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What is density?

Answer

Correct Answer: Mass per unit of volume of a substance

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How many incremental values are there in the temperature scale?

Answer

Correct Answer: 100

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What is the definition of "Default"?

Answer

Correct Answer: The value(s) or option(s) that are assumed during operation when not specified.

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What does the word "decimal" refer to?

Answer

Correct Answer: A base ten number system using the characters 0 through 9 to represent values.

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What is the definition of "Debug?"

Answer

Correct Answer: To find and correct mistakes in a program.

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What is the temperature band where heat is turned off upon rising temperature and turned on upon falling temperature expressed in degrees called?

Answer

Correct Answer: Controllers

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What is the minimum change of input signal required to cause a deflection in the pen position?

Answer

Correct Answer: Deadband

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What is Deadband?

Answer

Correct Answer: The minimum change of input signal required to cause a deflection in the pen position

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What does "DC" stand for in electrical current?

Answer

Correct Answer: Direct current

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What is a data base management system?

Answer

Correct Answer: A program that allows access to the information.

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What is the reduction of vibratory movement through dissipation of energy called?

Answer

Correct Answer: Damping

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What is the definition of damping?

Answer

Correct Answer: The reduction of vibratory movement through dissipation of energy.

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Which of the following is FALSE about continuous spectrum?

Answer

Correct Answer: The spectrum is continuous in the frequency domain and is characterized by an infinite number of frequency components.

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What is a continuous spectrum?

Answer

Correct Answer: A frequency spectrum that is characterized by non-periodic data.

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What is the function of a Connection Head?

Answer

Correct Answer: To enclose the electrical connections made by the thermocouple

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What is the main purpose of a Connection Head?

Answer

Correct Answer: To make electrical connections

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Conformity Error is caused by:

Answer

Correct Answer: The difference between the actual reading and the temperature shown in published tables for a specific voltage input.

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What does the term "Confidence Level" refer to?

Answer

Correct Answer: The range within which the true value of a measured quantity exists

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What is the conveying of electrical energy or heat through or by means of a conductor called?

Answer

Correct Answer: Conduction

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What is the definition of "Conduction"?

Answer

Correct Answer: The conveying of electrical energy or heat through or by means of a conductor.

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What is conductance?

Answer

Correct Answer: The measure of the ability of a solution to carry an electrical current.

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What is a compiler?

Answer

Correct Answer: A program that translates a high-level language, such as Basic, into machine language.

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What does the term "compensation" mean?

Answer

Correct Answer: An addition of specific materials or devices to counteract a known error.

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What is the purpose of a compensating loop?

Answer

Correct Answer: Lead wire resistance compensation for RTD elements

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Why are compensating alloys used?

Answer

Correct Answer: To connect thermocouples to instrumentation

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What is a compensated connector?

Answer

Correct Answer: A connector made of thermocouple alloys used to connect thermocouple probes and wires.

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What is Communication?

Answer

Correct Answer: Transmission and reception of data among data processing equipment and related peripherals.

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What is the full form of dB in the context of the given content?

Answer

Correct Answer: Decibels

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What is the output form or type of control action used by a temperature controller to control temperature?

Answer

Correct Answer: On/off, time proportioning, PID

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What is the Total temperature variation from a desired set point of system called?

Answer

Correct Answer: Closeness of Control

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What is the meaning of closeness of control?

Answer

Correct Answer: Total temperature variation from a desired set point of system

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What does a clock do?

Answer

Correct Answer: Generates periodic signals for synchronization

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What is the term applied to the phenomenon which occurs when an output signal is limited in some way?

Answer

Correct Answer: Clipping

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What does "Clear" mean?

Answer

Correct Answer: To restore a device to a prescribed initial state, usually the zero state.

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What does chatter refer to in a control process?

Answer

Correct Answer: The rapid cycling on and off of a relay due to insufficient bandwidth in the controller.

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What is chatter in a control process?

Answer

Correct Answer: The rapid cycling on and off of a relay

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What is a character?

Answer

Correct Answer: A letter, digit or other symbol that is used as the representation of data.

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What are Ceramic materials mainly used for?

Answer

Correct Answer: Polycrystalline ferroelectric materials

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What is the most common type of ceramic insulation?

Answer

Correct Answer: Alumina

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Where was the Celsius temperature scale defined?

Answer

Correct Answer: At the ice point and boiling point of water

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What is the boiling point of water on the Celsius scale?

Answer

Correct Answer: 100°C

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What causes cavitation?

Answer

Correct Answer: A decrease in pressure

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How many calories are needed to raise one gram of water 1°C?

Answer

Correct Answer: 1

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What is a calorie?

Answer

Correct Answer: The quantity of thermal energy required to raise one gram of water 1°C at 15°C.

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What does calibration involve?

Answer

Correct Answer: The process of adjusting an instrument so that its reading can be correlated to the actual value being measured.

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What is the Breakdown Voltage Rating?

Answer

Correct Answer: The voltage which can be applied to insulation without arcing or conduction.

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Above what voltage value can a transducer be applied without arcing or conduction?

Answer

Correct Answer: Breakdown Voltage Rating

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What is the boiling point of water?

Answer

Correct Answer: 100°C

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What is the BNC connector?

Answer

Correct Answer: A quick disconnect electrical connector used to interconnect and/or terminate coaxial cables

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What does BNC stand for?

Answer

Correct Answer: Bayonet Neill–Concelman

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What colours can a blackbody be?

Answer

Correct Answer: Not necessarily black

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What is a Bit?

Answer

Correct Answer: The smallest unit of computer information, it is either 0 or 1.

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What does the term "Bipolar" refer to in the electrical field?

Answer

Correct Answer: The ability of a panel meter to display both positive and negative readings.

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What does the term "Binary" refer to?

Answer

Correct Answer: The base 2 numbering system, in which the only allowable digits are 0 and 1

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What are the only two allowable digits in the binary numbering system?

Answer

Correct Answer: 0 and 1

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What is the base of Binary Coded Decimal?

Answer

Correct Answer: 10

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What is the minimum number of bits required to represent a decimal number in BCD form?

Answer

Correct Answer: 4

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What does BIAS Current refer to?

Answer

Correct Answer: A very low-level DC current generated by a panel meter and superimposed on a signal

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What is the chemical formula for Beryllia?

Answer

Correct Answer: BeO

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Beryllium Oxide is which of the following?

Answer

Correct Answer: A high-temperature mineral insulation material

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How many lines are used to represent one decimal digit in BCD?

Answer

Correct Answer: 4

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BCD is which type of data output format?

Answer

Correct Answer: Parallel

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What does BCD stand for?

Answer

Correct Answer: Buffered: Binary-coded decimal output with output drivers

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What is the unit of data transmission speed equal to the number of bits per second?

Answer

Correct Answer: Baud

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What does Baud measure?

Answer

Correct Answer: The number of bits per second

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What does the acronym "BASIC" stand for?

Answer

Correct Answer: Beginner's All-purpose Symbolic Instruction Code

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What is Bandwidth?

Answer

Correct Answer: A symmetrical region around the set point in which proportional control occurs.

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What is the total noise floor from all sources of interference in a measurement system called?

Answer

Correct Answer: Background Noise

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What is the output of an amplifier?

Answer

Correct Answer: Enlarged reproduction of the essential features of its input

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What is the unit used to define the rate of flow of electricity in a circuit?

Answer

Correct Answer: Ampere

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How many electrons flow in one ampere?

Answer

Correct Answer: 6.28 x 1018

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What is an ammeter used for?

Answer

Correct Answer: To measure current

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What is the average or mean temperature of the surrounding air which comes in contact with the equipment and instruments under test?

Answer

Correct Answer: Ambient Temperature

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What is the definition of ambient conditions?

Answer

Correct Answer: The conditions around the transducer

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Transducer is a device that _______.

Answer

Correct Answer: Converts energy from one form to another

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What is alumel?

Answer

Correct Answer: An aluminum nickel alloy used in the negative leg of a Type K thermocouple

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What is the definition of alphanumeric?

Answer

Correct Answer: A character set that contains both letters and digits.

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With which alloy is pure copper used as the negative leg to form extension wire for platinum—platinumrhodium thermocouples?

Answer

Correct Answer: Alloy 11

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What is the minimum sample rate needed to avoid aliasing?

Answer

Correct Answer: Fs >= 2*highest frequency value

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What does the address label identify?

Answer

Correct Answer: The memory location where a unit of information is stored.

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What is the definition of "address"?

Answer

Correct Answer: The label or number identifying the memory location where a unit of information is stored.

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ADC stands for ____

Answer

Correct Answer: Analog-to-Digital Converter

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What is an adaptor?

Answer

Correct Answer: A mechanism or device for attaching non-mating parts.

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What is the accuracy of a measurement device usually expressed as?

Answer

Correct Answer: ± percent of full scale output or reading

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What is the full form of AC?

Answer

Correct Answer: Alternating current

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What is the temperature of Absolute Zero?

Answer

Correct Answer: 0 Kelvin

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