When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

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 rotor of a ship rotates in clockwise direction when viewed from stern and the ship takes a left turn. The effect of gyroscopic couple acting on it will be

A

to raise the bow and stern

B

to lower the bow and stern

C

to raise the bow and lower the stern

D

to raise the stern and lower the bow

The pitching of a ship produces forces on the bearings which act __________ to the motion of the ship.

A

Vertically and parallel

B

Vertically and perpendicular

C

Horizontally and parallel

D

Horizontally and perpendicular

The engine of an aeroplane rotates in clockwise direction when seen from the tail end and the aeroplane takes a turn to the left. The effect of gyroscopic couple on the aeroplane will be

A

to dip the nose and tail

B

to raise the nose and tail

C

to raise the nose and dip of the tail

D

to dip the nose and raise the tail

A ship leaves port and sails 6 miles west. It then sails 6 miles south ;and then 6 miles west again. Approximately how many miles is the ship from port?

A

9

B

11

C

13

D

15

Two Ships leave a port at the same time.Ship A sails 300 miles to the West Ship B sails 400 miles to the North.How far apart are the ships at the end of their trips?

A

300 miles

B

400 miles

C

500 miles

D

900 miles

Two ships leave a port at the same time, Ship A sails 300 miles to West and Ship B Sails 400 miles to the North. How fat apart are the ships at the end of their trips?

A

300 miles

B

400 miles

C

500 miles

D

900 miles

In triangle PQR length of the side QR is less than twice the length of the side PQ by 2 cm. Length of the side PR exceeds the length of the side PQ by 10 cm. The perimeter is 40 cm. the length of the smallest side of the triangle PQR is:

A

6 cm

B

8 cm

C

9 cm

D

10 cm

The product of either force of couple with the arm of the couple is called

A

Resultant couple

B

Moment of the forces

C

Resulting couple

D

Moment of the couple

Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

A

Area of the triangle

B

Twice the area of the triangle

C

Half the area of the triangle

D

None of these

When the pitching of a ship is __________ the effect of gyroscopic couple acting on it will be to move the ship towards port side.

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