Home
Earn $100 Online Daily. Work From Home. Click Here

What is the correct answer?

4

The rotating shafts tend to vibrate violently at whirling speeds because

A. The system is unbalanced

B. Bearing centre line coincides with the axis

C. The shafts are rotating at very high speeds

D. Resonance is caused due to the heavy mass of the rotor

Share this question with your friends
Correct Answer :

D. Resonance is caused due to the heavy mass of the rotor


Related Questions

The ratio of maximum fluctuation of energy to the workdone per cycle is… A point on a connecting link (excluding end points) of a double slider… Which type of gearing is used in steering system of an automobile? The number of links and instantaneous centers in a reciprocating engine… The tractive force is maximum or minimum when the angle of inclination… Pitch point on a cam is Which of the following is a spring controlled governor? A fixed gear having 200 teeth is in mesh with another gear having 50 teeth.… A machine mounted on a single coil spring has a period of free vibration… In a reciprocating engine, usually __________ of the reciprocating masses… Which of the following is a lower pair? The velocity of any point in mechanism relative to any other point on… In a shaper mechanism, the Coriolis component of acceleration will The two links OA and OB are connected by a pin joint at O. If the link… In gears, interference takes place when The advantage of the piston valve over the slide valve is that in the… A pantograph is a mechanism with The motion between a pair when limited to a definite direction, irrespective… The lead screw of a lathe with nut forms a When two pulleys are connected by means of a cross belt drive, then both… The partial balancing of reciprocating parts in locomotives produces When the sleeve of a Porter governor moves upwards, the governor speed A mechanism consisting of four links is called a __________ mechanism. The contact ratio is given by When two pulleys of different diameters are connected by means of an open… Angle of ascent of cam is defined as the angle The acceleration of a particle at any instant has two components i.e.… Coriolis component acts Shaft revolving in a bearing is the following type of pair The direction of linear velocity of any point on a link with respect to…

Also checkout

Advanced Surveying MCQ Profit and Loss MCQ Machine Input Mi-set 2 MCQ Urinary Calculus Disease MCQ Advance DBMS MCQ Partnership MCQ Computer Architecture MCQ Phylum - Reptilia MCQ Biology and Human Welfare MCQ Microsoft Access MCQ Fill in the blanks MCQ Surface Area MCQ