Dynamics of Machinery Test Questions

Q.  At which frequency ratio, phase angle increases as damping factor increases?

a. When frequency ratio is less than unity
b. When frequency ratio is more than unity
c. When frequency ratio is zero
d. All of the above


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  When a person enters a far field from a near field, the sound pressure level drops off at the rate of _______
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  What happens when sound waves impinge on fiber boards?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The resonant frequency of a mass-spring system depends upon ________
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Elastomeric foam used as a sound absorber is made of ___________
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which part of the human ear is divided by the basilar membrane?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Calculate logarithmic decrement if damping factor is 0.33.
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Determine logarithmic decrement, if the amplitude of a vibrating body reduces to 1/6th in two cycles.
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  In metallography, microscopic method provides information about _____
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The study of metallographic includes ____
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  In microscopy, which illumination parameter is used for producing images with dark non-flat structure and bright back ground?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  What is meant by recalescence in cooling curves?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The cooling curve formed when a material is solidified due to latent heat of fusion is called as ______.
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Austenite phase in Iron-Carbon equilibrium diagram _______
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  What is the crystal structure of δ-ferrite?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which of the following phases has a complex orthorhomic crystal structure?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  In Iron-Carbon equilibrium diagram, at which temperature cementite changes from ferromagnetic to paramagnetic character?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which of the following statements is/are true about Iron in Iron-Carbon equilibrium diagram ? 1. It is soft and ductile 2. It is allotropic in nature 3. It is magnetic above curie temperature 4. Below the temperature of 1539 °C, iron is in liquid state
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which transformation starts after the nucleation of ferrite phase?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  The process of decomposing martensitic structure, by heating martensitic steel below its critical temperature is called as _______
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts
MCQs:  Which of the following processes permit the transformation of austenite to martensite, throughout the cross-section of a component without cracking or distortion?
Category: Mechanical Engineering Questions,   Published by: T-Code Scripts