Science Class 6th

401. Which has larger diameter in Wheel and Axle?

A. Wheel

B. Axle

C. Both ‘a’ and ‘b’

402. Wheel and axle helps to __________ objects.

A. Rotate

B. Lift

C. Both ‘a’ and ‘b’

403. Load is attached to?

A. Axle

B. Wheel

C. None of these

405. To increase the speed, force is applied to?

A. Axle

B. Wheel

C. Both ‘a’ and ‘b’

406. The greater the number of pulleys in pulley system, the ______ the effort is needed to lift a load.

A. Greater

B. No

C. Lesser

D. All of these

407. To lift heavy load, force is applied on?

A. Axle

B. Wheel

C. None of these

408. Steering wheel is common example of?

A. Wheel

B. Axle

C. Wheel and Axle

D. None of these

409. Which of the following is example of wheel and axle?

A. Drill machine

B. Crank

C. Screw driver

D. All of these

410. A pulley is a simple machine, which consists of?

A. Flat wheel

B. Wheel

C. Grooved wheel

D. None of these

411. There are _______ types of pulleys.

A. 1

B. 2

C. 3

D. None of these

412. If the block of pulley is attached to fix support and doesn’t change its position, then it is called?

A. System pulley

B. Fixed pulley

C. Movable pulley

D. None of these

413. In fixed pulley one end of rope is attached to load and effort is applied on?

A. Pulley

B. Free end of rope

C. Block

414. The load in fixed pulley would be lifted upward when effort is ______ to load of object.

A. Greater

B. Equal

C. Less

415. Fixed pulley only ______ the direction of applied effort.

A. Change

B. Lift

C. Move

D. None of these

 

416. When block of pulley is not connected to a fixed support and the pulley is free to move, it is called?

A. Fixed pulley

B. System pulley

C. Movable pulley

D. None of these

417. With the help of _________ pulley, we can lift greater load by applying less effort as compared to fixed pulley.

A. Movable

B. Fixed

C. None of these

418. Which pulley doesn’t change the direction of force?

A. Movable

B. Fixed

C. None of these

419. The applied force and the load move in the same direction in_____ pulley.

A. Fixed

B. Movable

C. None of these

420. A combination of fixed and movable pulley us called _______.

A. System pulley

B. Pulley

C. Combined pulley

D. All of these