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Mechanical Engineering Exam  >  Mechanical Engineering Tests  >  Topicwise Question Bank for Mechanical Engineering  >  Test: Linear Vibration Analysis - 2 - Mechanical Engineering MCQ

Test: Linear Vibration Analysis - 2 - Mechanical Engineering MCQ


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10 Questions MCQ Test Topicwise Question Bank for Mechanical Engineering - Test: Linear Vibration Analysis - 2

Test: Linear Vibration Analysis - 2 for Mechanical Engineering 2024 is part of Topicwise Question Bank for Mechanical Engineering preparation. The Test: Linear Vibration Analysis - 2 questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Linear Vibration Analysis - 2 MCQs are made for Mechanical Engineering 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Linear Vibration Analysis - 2 below.
Solutions of Test: Linear Vibration Analysis - 2 questions in English are available as part of our Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering & Test: Linear Vibration Analysis - 2 solutions in Hindi for Topicwise Question Bank for Mechanical Engineering course. Download more important topics, notes, lectures and mock test series for Mechanical Engineering Exam by signing up for free. Attempt Test: Linear Vibration Analysis - 2 | 10 questions in 30 minutes | Mock test for Mechanical Engineering preparation | Free important questions MCQ to study Topicwise Question Bank for Mechanical Engineering for Mechanical Engineering Exam | Download free PDF with solutions
Test: Linear Vibration Analysis - 2 - Question 1
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All of the following statements are correct, except,

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Mass does not depend on altitude, so natural frequency remains unaffected.

Test: Linear Vibration Analysis - 2 - Question 2
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The critical speed of the shaft depends upon

Detailed Solution for Test: Linear Vibration Analysis - 2 - Question 2

Critical speed of a shaft is nothing but its natural frequency and it is

where,
K = stiffness of the shaft.
m = mass of the shaft

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Test: Linear Vibration Analysis - 2 - Question 3
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The equation: represents

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Since excitation force is absent in the equation hence it is the equation of free, damped vibration.

Test: Linear Vibration Analysis - 2 - Question 4
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The governing equation of a specific simple vibrating system is

The system is subjected to
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Since excitation force is present in the equation hence it is the equation of forced vibration.

Test: Linear Vibration Analysis - 2 - Question 5
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The static deflection of a shaft under a flywheel is 4 mm. Take g = 10 m/s2. What is the critical speed in rad/s?
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Critical speed in rad/s2

Test: Linear Vibration Analysis - 2 - Question 6
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A flexible rotor-shaft system comprises of a 10 kg rotor disc placed in the middle of a massless shaft of diameter 30 mm and length 500 mm between bearings (shaft is being taken massless as the equivalent mass of the shaft is included in the rotor mass) mounted at the ends. The shaft is made of steel for which the value of E is 2.1 x 1011 Pa. What is the critical speed of rotation of the shaft.
Detailed Solution for Test: Linear Vibration Analysis - 2 - Question 6

For shaft loaded at middle with mass M
Deflection 
Moment of inertia

So deflection of shaft

Test: Linear Vibration Analysis - 2 - Question 7
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When a body is subjected ,to transverse vibration, the stress induced in the body will be
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In case of transverse vibration, bending stresses are generated

Test: Linear Vibration Analysis - 2 - Question 8
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Whirling speed of a shaft coincides with the natural frequency of its
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Whirling of shaft occurs when the natural frequency of transverse vibration matches with the frequency of rotating shaft.

Test: Linear Vibration Analysis - 2 - Question 9
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For given figure shows a spring mass system where the mass m is fixed in between two springs of stiffness s1 and s2. What is the equivalent spring stiffness
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Since the springs are connected in parallel
seq = s1 + s2

Test: Linear Vibration Analysis - 2 - Question 10
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The rate of decay of oscillations is known as
Detailed Solution for Test: Linear Vibration Analysis - 2 - Question 10

Natural logarithm of the amplitude reduction factor is known as logarithmic decrement.

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