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A direct rope haulage pulls 8 tubs loaded with coal through an incline of length 500 m having an inclination of 1 in 6. Consider the following additional data.<br>Capacity of tub = 1.0 tonne.<br>Tare weight of tub = 500 kg<br>Hauling speed = 9 km per hour<br>Coefficient of friction between wheel and rail = $$\frac{1}{{60}}$$<br>Coefficient of friction between rope and drum = $$\frac{1}{{10}}$$<br>Mass of rope per meter = 1.5 kg<br>The minimum power required to haul the tubs in kW is
A
345.50
B
348.60
C
350.10
D
365.50
E
58.86
Correct Answer:
58.86
A haulage rope winds on a drum of radius 500 mm, the free end being attached to a truck. The truck has a mass of 500 kg and is initially at rest. The drum is equivalent to a mass of 1250 kg with radius of gyration 450 mm. The rim speed of the drum is 0.75 m/s before the rope tightens. By considering the change in linear momentum of the truck and in the angular momentum of the drum, find the speed of the truck when the motion becomes steady.
A
0.502 m/s
B
0.602 m/s
C
0.702 m/s
D
0.802 m/s
What is the condition for a tree to be weight balanced. where a is factor and n is a node? >= a*weight and weight >= a*weight. b) weight >= a*weight and weight >= a*weight. c) weight >= a*weight and weight >= a*weight. d) weight is a non zero
A
weight >= a*weight and weight >= a*weight.
B
n.left
C
n.left
D
n.left
Drum X is 1/2 full of oil and drum Y, which has twice the capacity of drum X, is 2/3 full of oil. If all of the oil in drum X is poured into drum Y, then drum Y will be filled to what fraction of its capacity?
A
3/4
B
5/6
C
11/12
D
7/6
Weight of Arun is 4/7 of the weight of Bablu. Weight of Bablu is 1/2 of the weight of Ram. Weight of Ram is 4 times of the weight of Deep. Weight of Deepis 1/9 of the weight of Ankit. Whose weight is more than the weight of Deep but less than the weight of Bablu?
A
Ankit
B
Arun
C
Ram
D
Deep
Weight of Alok is twice the weight of Karan. Weight of Karan is one-fourth of the weight of Roma. Weight of Roma is twice of the weight of Tipu. Weight of Tipu is twice of the weight of Shivam. The weight of Roma is greater than the weight of how many persons among Alok, Karan, Shivam and Tipu?
A
3
B
4
C
0
D
2
Weight of L is one-fourth of the weight of V. Weight of V is twice of the weight of B. Weight of B is half of the weight of C. Weight of C is thrice of the weight of H. The weight of V is greater than the weight of how many persons among L, B, H and C?
A
3 \
B
2
C
1
D
0
Seven people A, B, C, D, E, F and G live on separate floors of a 7-floor building. Ground floor is numbered 1, first floor is numbered. 2 and so on until the topmost floor is numbered 7. Each one of these having a different cars-Cadillac, Ambassador, Fiat, Maruti, Mercedes, Bedford and Fargo but not necessarily in the same order. Only three people live above the floor on which A lives. Only one person lives between A and the one having a car Cadillac. F lives immediately below the one having a car Bedford. The one having a car Bedford lives on an even-numbered floor. Only three people live between the ones having a car Cadillac and Maruti. E lives immediately above C. E is not having a car Maruti. Only two people live between B and the one having a car Fargo. The one having a car Fargo lives below the floor on which B lives. The one having a car Fiat does not live immediately above D or immediately below B. D does not live immediately above or immediately below A. G does not have a car Ambassador. Question : How many people live between the floors on which D and the one having a car Bedford ?
A
One
B
Two
C
Three
D
Four
A man ordered a length of rope by telephone from his nearest hardware shop. But when a worker in the shop brought the rope, he found that the man on the telephone had miswritten the order by interchange feet and inches. As a result of this, the length of rope received was only 30% of the length he had ordered. The length of the rope which the man ordered was between :
A
6 ft and 7 inches
B
7$$\frac{1}{2}$$ ft and 9 ft
C
9 ft and 2 inches
D
10$$\frac{1}{2}$$ ft and 12 ft
The tubs capacity in direct rope haulage varying from when pedestal bearing are used.
A
0.2 - 0.3m<sup>3</sup>
B
0.4 - 0.7m<sup>3</sup>
C
0.8 - 1.1m<sup>3</sup>
D
1.2 - 1.5m<sup>3</sup>
A 12 gallon tub has a faucet that lets water in at a rate of 3 gallons per minute, and has a drain that lets water out at a rate of 1.5 gallons per minute. If you start with 3 gallons of water in the tub, how long will it take to fill the tub completely?
A
6 minutes
B
7 minutes
C
8 minutes
D
9 minutes