Top 50+ Solved Measurement and Control of Vibration MCQ Questions Answer
Q. What is the function of frequency analyzer?
a. It analysis noise signal in frequency domain into various frequency bands by magnetically separating the signal
b. It analysis noise signal in frequency domain into various frequency bands by electronically separating the signal
c. It analysis noise signal in frequency domain into various frequency bands by electromagnetically separating the signal
d. None of the above
Q. What is the function of the controller in active vibration isolation systems?
a. Detect vibrations to be controlled
b. Reposition the masses
c. Interpret detected vibrations and execute commands
d. All of the above
Q. Temperature monitoring technique uses which of the following devices to measure temperature of the machining surfaces?
a. Pyrometers
b. Thermocouples
c. Thermometers
d. All of the above
Q. Which of the following statements is true about stroboscope?
a. Stroboscope is non-contact type frequency instrument
b. Stroboscope can measure frequency upto 5 Hz
c. Stroboscope uses electromagnetic radiations to measure frequency
d. All of the above
Q. Which type of frequency measuring instrument has multiple reeds of different naturalfrequency to measure vibrations?
a. Fullarton tachometer
b. Frahm Tachometer
c. Both a. and b.
d. None of the above
Q. Which of the following instruments measure amplitude of a vibrating body?
a. Vibrometers
b. Seismometer
c. Both a. and b.
d. None of the above
Q. Which type of monitoring system uses stroboscope to measure speed of the machine?
a. Portable condition monitoring system
b. Basic condition monitoring system
c. Computer based condition monitoring system
d. None of the above
Q. Seismometer can be used to measure acceleration of any instrument only if _____
a. it's natural frequency is high
b. it generates output signal which is proportional to relative acceleration of the vibrating object
c. both a. and b.
d. none of the above
Q. In FFT Spectrum Analyzer, the D/A converter is used to ________.
a. reject unwanted signals
b. sets the level of the signals to be fed to the A/D converter
c. convert analog signals into digital signals
d. converts digital signals into analog signals
Q. In FFT Spectrum Analyzer, the A/D converter is used to ________.
a. reject unwanted signals
b. sets the level of the signals to be fed to the A/D converter
c. convert analog signals into digital signals
d. converts digital signals into analog signals
Q. In FFT Spectrum Analyzer, the attenuator is used to ________.
a. reject unwanted signals
b. sets the level of the signals to be fed to the A/D converter
c. convert analog signals into digital signals
d. converts digital signals into analog signals
Q. In FFT Spectrum Analyzer, the filter is used to ________.
a. reject unwanted signals
b. sets the level of the signals to be fed to the A/D converter
c. convert analog signals into digital signals
d. converts digital signals into analog signals
Q. FFT analyzer can be used to find the ___________.
a. natural frequencies
b. mode shapes
c. both natural frequencies and mode shapes
d. none of the above
Q. Fourier transform is a mathematical procedure to obtain the __________ of a given inputsignal.
a. spectrum
b. integration
c. difference
d. none of the above
Q. In FFT Spectrum Analyzer, FFT stands for _______.
a. Frequency Fourier Transform
b. Fast Fourier Transmission
c. Frequency Fourier Transmission
d. Fast Fourier Transform