Theory of Vibrations MCQs
Theory of Vibrations MCQs
Answer these 100+ Theory of Vibrations MCQs and assess your grip on the subject of Theory of Vibrations.
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1: What term is used to describe the rate of change of velocity in the metric system?
A. Acceleration
B. Speed
C. Gradient
D. Velocity
2: What is the rate of change of velocity often depicted as?
A. Km/h
B. Acceleration
C. G’s
D. Distance/time
E. M/s
3: What do accelerometers typically cover?
A. A much wider frequency range
B. They can measure motion in three dimensions
C. They can be used to detect acceleration or deceleration
D. A smaller temperature range
E. A shorter range
4: What is the most used transducer for vibration measurements?
A. Hall-effect sensor
B. Magnetometer
C. Ultrasonic
D. Piezoelectric
E. Accelerometer
5: What is the condition where components within a drivetrain are parallel or perpendicular according to design requirements?
A. Misalignment
B. Crossmember failure
C. Alignment
D. Incomplete transmission
E. Worn out gear teeth
6: What is the term for the adhesive used to mount the attachment pad to the machine?
A. Glue
B. Industrial
C. Adhesive
7: What is the term for a vibration axis that is parallel to the centerline of a shaft or turning axis of a rotating part?
A. Centripetal
B. Radial
C. Axial
D. Pivoting
8: Along with radial and tangential, what type of vibration axis is the axial?
A. Three
B. One
C. Two
9: What does balancing a rotating element reduce?
A. Weight
B. Vibratory forces
C. Net weight
D. Overall static stability
E. Torque
10: What does the measurement, recording and analysis of machinery parameters do?
A. Optimize production throughput
B. Create a maintenance schedule
C. Check performance
D. Establish machine specifications
E. Determine equipment health
11: What does "mils" stand for?
A. Milliseconds
B. Thousandths of an inch
C. Millionths of an inch
D. Miles
E. Miles per hour
12: What is the failure state for an item or part of an item?
A. Defective
B. Inoperable
C. Worn-out
D. Damaged
13: Failure is not a specification of what?
A. A method of achieving a result
B. A product of analysis
C. Result
D. Item or part of an item
E. Process or procedure
14: What kind of parts result in failure?
A. The software parts
B. The mechanical or physical parts
C. The electrical parts
15: What is the term for vibration of a machine caused by some mechanical excitation?
A. Periodic vibration
B. Natural vibration
C. Vibration
D. Tremors
E. Forced vibration
16: What is the vibration of a machine caused by?
A. Some mechanical excitation
B. Electricity flowing through wires
C. The heat from the machine
D. Air moving in and out of the machine
E. The motion of the machine
17: What type of frequency is expressed in cpm?
A. Cycles per minute
B. KHz
C. Hertz
D. Kilohertz
18: What is the number of events that occur within a fixed time period?
A. Chance
B. Frequency
C. Duration
D. Probability
19: What is the time domain representation of vibration?
A. A vibration signal is represented as a time wave form
B. A vibration signal is represented as a sequence of amplitudes
C. A vibration signal is represented as a vector
D. A vibration signal is represented as a function
E. A vibration signal is represented as a sequence of peaks and valleys
20: What is a harmonic quantity?
A. Sinusoidal
B. Frequency
C. Amplitude
21: What could an harmonic quantity be?
A. A waveform
B. A sinusoidal quantity
C. A rational number
D. A real number
E. A random quantity
22: Distortion caused by the presence of frequencies not present in the input signal is known as what?
A. Harmonic Distortion
B. Intermodulation distortion
C. Spectral Distortion
D. Signal to noise ratio distortion
23: What kind of distortion can occur in an output signal?
A. Harmonic
B. Nonlinear
C. Digital
D. Spectral
E. Audio frequency
24: What is the abbreviation for Hertz?
A. MHz
B. Hz
C. Hertz
D. KHz
25: What is the symbol for Hertz?
A. The unit of energy
B. A unit of angular velocity
C. The unit of wave length
D. A letter from the Greek alphabet
E. The unit of frequency
26: What is the property of frequency?
A. Hertz
B. Waveform
C. Speed
D. Wavelength
E. Power
27: What condition can reduce bearing life on rotating equipment?
A. Corrosion
B. Imbalance
C. Poor lubrication
D. Worn parts
E. Excessive heat
28: Imbalance can cause what?
A. Undue machine vibration
B. Defective machinery
C. Defective product
D. Inefficient production
29: What can reduce motion severity?
A. Activity
B. Isolation
C. Rest
D. Physical therapy
30: MTBF is a measurement of reliability for what?
A. Electronics
B. Repairable items
C. Medical devices
D. Electronic equipment
E. Cars
31: What is the acronym for Mean-Time-Between-Failure?
A. MTTR
B. MTBF
C. MTT
D. MTF
32: What is the measurement of reliability for repairable items?
A. Mean-Time-To-Repair
B. Mean-Time-To-Failure
C. Mean-Time-Between-Failure
D. Mean-Square Error of Predictive Values
33: What is the measure for non-repairable items?
A. Mean-Time-To-Failure
B. Mean-Time-To-Recover
C. Mean-Time-To-Replacement
D. Mean-Time-To-repair
E. Mean-Time-To-deploy
34: What is an example of an associated reference component?
A. Height
B. Distance
C. Color
D. Volume
E. Speed
35: What are multiples or harmonics of the running speed?
A. Sines
B. Orders
C. Foucaults
D. Hertz
E. Seconds
36: What is associated with orders in the rotating machines?
A. Number of revolutions
B. Running speed
C. Number of disks
D. Brakes
E. Turning speed
37: Pitch is a rotation in the plane of what?
A. Upward motion
B. A line parallel to the ground
C. Rightward movement
D. Forward motion
38: Pitch is the rotation in the plane of forward motion, about what axis?
A. Up-down
B. Front-back
C. Left-right
39: What is the direction from the transducer to the center of the shaft on rotating equipment?
A. Horizontal
B. Radial
C. Angular
D. Circular
40: What does "maximum deviation from the mean" mean?
A. Repeatability
B. Variability
C. Standard deviation
D. Mean
E. Expected value
41: What aspect of data points taken under identical conditions is referred to as repetition?
A. The size of the data set
B. The number of times the data points occurs
C. The frequency of data points
D. The maximum deviation from the mean
E. The number of data points
42: What does testing that reproduces a specified desired history mean?
A. Replication
B. A failure
C. Reproducing
D. Validation
E. Repeating
43: What does the term replication mean?
A. The process of making identical copies of data
B. The act of duplicating a document or object
C. Testing that reproduces a specified desired history
D. The act of issuing the same command multiple times
E. A duplicate of a document
44: What is the smallest input change that produces a detectable change in an instrument's output?
A. Calibration
B. Voltage
C. Frequency
D. Resolution
45: What does "resolution" mean?
A. The size of the output change
B. The closeness of the two inputs
C. The number of required votes to pass a resolution in the United States House of Representatives
D. The smallest input change that produces a detectable change in an instrument's output
E. The smallest distance between two points on a map
46: What is the term for determining what actually caused a failure?
A. Root cause analysis
B. Identification of the root cause
C. Fault localization
D. Fault diagnosis
E. Fault location
47: What is the scientific method called?
A. Observation
B. Hypothesis generation
C. Experimental design
D. Experiment design
E. Cause analysis
48: What is the name of the unit of measurement that describes the speed of a rotating machine?
A. Miles per hour
B. Kilometers per hour
C. Revolutions per minute
49: What is the ratio between electrical signal and mechanical quantity?
A. Resolution
B. Latency
C. Sensitivity
D. Amplitude
50: Sensitivity is an example of what?
A. Electrical signal
B. Chemical reaction
C. Acoustic signal
D. Music
E. Biological response
List of Theory of Vibrations M...
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Theory of Vibrations MCQs
Вопросы по теории колебаний на русском языке
Preguntas de Teoría de las Vibraciones en español
日本語での振動理論の質問
Domande di Teoria delle Vibrazioni in lingua italiana
Questions de Théorie des Vibrations en langues françaises
Teoria das Vibrações Théorie des Vibrations
Fragen zur Schwingungstheorie in deutschen Sprachen
中文振动理论问题
أسئلة نظرية الاهتزازات في اللغات العربية
Soal Teori Getaran dalam bahasa Indonesia
Türk dillerinde Titreşim Teorisi soruları
