Related Questions

When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.
A Upward
B Downward
C Forward
D Backward
K produces 100 parts twice as fast as G does. G produces 100 parts in 40 minutes. If each produces parts at a constant rate, how many parts will K produces in 6 minutes.
A 30
B 25
C 20
D 15
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be
A to move the ship towards port side
B to move the ship towards star-board
C to raise the bow and lower the stern
D to raise the stern and lower the bow
The rolling contact bearings as compared to sliding contact bearings have
A Low starting and low running friction except at very high speeds
B Accuracy of shaft alignment
C Small overall dimensions
D All of the above
What type of bearing is used for main bearings and connecting rod bearings?
A Ball bearings
B Plain bearings
C Needle roller bearing
D Taper roller bearing
The efficiency of jet propulsion for a ship with inlet orifices at right angles to the direction of motion of ship is given by
A $$\frac{{2\left( {{{\text{V}}_{\text{r}}} - {\text{v}}} \right){\text{v}}}}{{{\text{V}}_{\text{r}}^2}}$$
B $$\frac{{2\left( {{{\text{V}}_{\text{r}}} + {\text{v}}} \right){\text{v}}}}{{{\text{V}}_{\text{r}}^2}}$$
C $$\frac{{\left( {{{\text{V}}_{\text{r}}} - {\text{v}}} \right){\text{v}}}}{{{{\text{V}}_{\text{r}}}}}$$
D $$\frac{{\left( {{{\text{V}}_{\text{r}}} + {\text{v}}} \right){\text{v}}}}{{{{\text{V}}_{\text{r}}}}}$$
The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
A 40%
B 50%
C 60%
D 80%
If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
A 30°
B 60°
C 90°
D 120°
Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and
A Concurrent
B Parallel
C Concurrent parallel
D None of these
Coplanar non-concurrent forces are those forces which __________ at one point, but their lines of action lie on the same plane.
A Meet
B Do not meet
C Either ‘A’ or ‘B’
D None of these

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