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A bucket wheel excavator with 20 buckets of capacity 0.5 m<sup>3</sup> each, rotates at 5 rev/min. The bucket fill factor is 80%. The excavator loads on to 1200 mm wide belt conveyor. The cross-section area (m<sup>2</sup>) of the material on the belt is 0.1B<sup>2</sup>, where B is the belt width in m. The minimum speed of the belt in m/s to avoid spillage of material is
A
7.23
B
5.79
C
4.63
D
3.7
Correct Answer:
4.63
There are two buckets, smaller bucket can hold only 3/5th of the water as compared to the larger bucket. If 6,000 buckets of larger capacity are needed to fill a pond. Then how many smaller capacity buckets are needed to fill the same pond?
A
8000
B
10000
C
12000
D
15000
12 buckets of water fill a tank when the capacity of each bucket is 13.5 litres. How many buckets will be needed to fill the same tank, if the capacity of each bucket is 9 litres?
A
8
B
15
C
16
D
18
18 buckets of water fill a tank when the capacity of each bucket is 8 litres. How many buckets will be needed to fill the same tank, if the capacity of the bucket is 12 litres?
A
12
B
13.5
C
24
D
Data insufficient
12 buckets of water fill a tank when the capacity of each tank is 13.5 liters. How many buckets will be needed to fill the same tank ,the capacity of each buckets is 9 liters?
A
8
B
18
C
16
D
4
12 buckets of water fill a tank when the capacity of each tank is 13.5 liters. How many buckets will be needed to fill the same tank,if the capacity of each bucket is 9 liters?
A
8
B
15
C
16
D
18
Sita's bucket has thrice the capacity as Ramu's bucket. It takes 60 turns for Sita's bucket to fill the empty drum. How many turns it will take for both the buckets of Sita's and Ramu's, having each turn together to fill the empty drum?
A
45
B
40
C
50
D
30
To fill a tank , 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is educed to two-fifth of its present ?
A
10
B
35
C
62.5
D
None of these
To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of bucket is reduced to two-fifth of its present ?
A
52.5
B
62.5
C
72.5
D
82.5
To fill a tank, 25 buckets of water is required. How many buckets of water will be required to fill the same tank if the capacity of the bucket is reduced to two-fifth of its present ?
A
10
B
35
C
62.5
D
Cannot be determined
E
None of these
The circumference of the back-sided wheel of a vehicle is 1 m greater than that of front side wheel. To travel 600 m, the front wheel rotates 30 times more than the back wheel. The circumference of the front wheel is :
A
2 m
B
4 m
C
5 m
D
None of these