Related Questions

Two shafts A and B are made of the same material. The diameter of shaft A is twice as that of shaft B. The power transmitted by the shaft A will be __________ of shaft B.
A Twice
B Four times
C Eight times
D Sixteen times
In ______ machines, the size of the shaft is decided by the critical speed which depends on the deflection of the shaft.
A small
B medium
C large
D any of the above
The product of the tangential force acting on the shaft and its distance from the axis of the shaft (i.e. radius of shaft) is known as
A Bending moment
B Twisting moment
C Torsional rigidity
D Flexural rigidity
The natural frequency of free torsional vibrations of a shaft is equal to (where q = Torsional stiffness of the shaft and $$I$$ = Mass moment of inertia of the disc attached at the end of a shaft)
A $$2\pi \sqrt {\frac{{\text{q}}}{I}} $$
B $$2\pi \sqrt {{\text{q}}I} $$
C $$\frac{1}{{2\pi }}\sqrt {\frac{{\text{q}}}{I}} $$
D $$\frac{1}{{2\pi }}$$
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft and $$\tan \varphi $$  = Coefficient of friction between the shaft and bearing)
A $${\text{r}}\sin \varphi $$
B $${\text{r}}\cos \varphi $$
C $${\text{r}}\tan \varphi $$
D $$\frac{{\text{r}}}{2}\cos \varphi $$
A policy taken with critical illness rider benefit is being assigned. Which type of assignment would suit the intended purpose because if the life insured is diagnosed with a critical illness, he only should receive the critical illness rider claim?
A Absolute assignment
B Conditional assignment
C Loan assignment
D Collateral assignment
In a superconductor the value of critical density depends upon
A Magnetic field strength
B Temperature
C Either A or B
D Both A and B
The factor which affects the critical speed of a shaft is
A diameter of the disc
B span of the shaft
C eccentricity
D all of the mentioned
The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in
A transverse vibrations
B torsional vibrations
C longitudinal vibrations
D none of the mentioned
The critical speed of a shaft in revolution per second is __________ as that of natural frequency of transverse vibration.
A Same
B Different
C Unpredictable
D None of these

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