Related Questions

A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will
A Remain horizontal
B Slant up towards direction of pull
C Slant down towards direction of pull
D None of the above
A disc is a spinning with an angular velocity $$\omega $$ rad/s about the axis of spin. The couple applied to the disc causing precession will be (where $$I$$ = Mass moment of inertia of the disc and $$\omega {\text{P}}$$  = Angular velocity of precession of the axis of spin)
A $$\frac{1}{2}I{\omega ^2}$$
B $$I{\omega ^2}$$
C $$\frac{1}{2}I\omega \omega {\text{P}}$$
D $$I\omega \omega {\text{P}}$$
The moment of inertia of a thin disc of mass ‘m’ and radius ‘r’, about an axis through its center of gravity and perpendicular to the plane of the disc is
A $$\frac{{{\text{m}}{{\text{r}}^2}}}{2}$$
B $$\frac{{{\text{m}}{{\text{r}}^2}}}{4}$$
C $$\frac{{{\text{m}}{{\text{r}}^2}}}{6}$$
D $$\frac{{{\text{m}}{{\text{r}}^2}}}{8}$$
A circular disc rotates at n rpm. The angular velocity of a circular ring of same mass and radius as the disc and to have the same angular momentum is
A n rpm
B $$\frac{{\text{n}}}{2}$$ rpm
C $$\frac{{\text{n}}}{4}$$ rpm
D 2n rpm
If technology is the height of modernlity, nuclear technology must be considered the zenith of that technology and its highest manifestation.
A Pinnacle
B Worthly
C Robust
D Undaunted
Which technoly is used in compact disk?
A Mechanical
B Electrical
C Electro Magnetic
D laser
Compact discs, (according to the original CD specifications) hold how many minutes of music?
A 74 mins
B 56 mins
C 60 mins
D 90 mins
Which computer has been designed to be as compact as possible?
A Mini
B Super computer
C Micro computer
D Mainframe
E None of the above
A compact estimate about the amount of materials handling between various work stations is obtained from the
A Gantt chart
B Bin chart
C String diagram
D Travel chart
The driving force for the sintering of a powder compact is
A Strain energy
B Surface energy
C Volume energy
D Stacking fault energy

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