Dynamics of Machinery Test Questions


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


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  Eddy current damping is an example of _____
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MCQs:  Which of the following relations is true for viscous damping?
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MCQs:  What is meant by critical damping coefficient?
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MCQs:  Which of the following statements is/are true for coulomb damping? 1. Coulomb damping occurs due to friction between two lubricated surfaces 2. Damping force is opposite to the direction of motion of vibrating body 3. For smooth surfaces, coefficient of friction depends upon velocity 4. Damping force depends upon the rubbing velocity between two rubbing surfaces
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MCQs:  In damped free vibrations, which parameters indicate vibrations?
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MCQs:  Calculate natural frequency of damped vibration, if damping factor is 0.52 and natural frequency of the system is 30 rad/sec which consists of machine supported on springs and dashpots.
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MCQs:  At which frequency ratio, phase angle increases as damping factor increases?
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MCQs:  What is the effect of damping on phase angle at resonance frequency?
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MCQs:  Calculate damped natural frequency, if a spring mass damper system is subjected to periodic disturbing force of 30 N. Damping coefficient is equal to 0.76 times of critical damping coefficient and undamped natural frequency is 5 rad/sec
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MCQs:  Calculate critical speed of a vehicle which moves on a road having sinusoidal profile of wavelength 2.5 m. The mass of the vehicle is 300 kg and natural frequency of its spring suspension system is 8 rad/sec
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MCQs:  What is meant by node point?
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MCQs:  What is meant by coupled differential equation?
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MCQs:  The motion of a system executing harmonic motion with one natural frequency is known as _______
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MCQs:  Which of the following instruments measure amplitude of a vibrating body?
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MCQs:  Which type of instruments do not require separate power source for measuring vibratory response of a vibratory system?
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MCQs:  Which type of frequency measuring instrument has multiple reeds of different natural frequency to measure vibrations?
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MCQs:  Which of the following statements is true about stroboscope?
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MCQs:  Temperature monitoring technique uses which of the following devices to measure temperature of the machining surfaces?
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