A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

A hydraulic press has a ram of 10 cms in diameter and a plunger of 1 cm in diameter. The force required on the plunger to raise a weight of 10 tons on the ram is __________ kg.

A

10

B

100

C

1000

D

10000

A Hydraulic press has a ram of 30 cm diameter and a plunger of of 2 cm diameter. It is used for lifting a weight of 35 kN. Find the force required at the plunger.

A

233.3 kN

B

311.1 kN

C

466.6 kN

D

155.5 kN

An O.C. mine requires 16 blocks of overburden of 3000 te each to mine 4 blocks of coal of 2000 te each. The mining cost of both overburden and coal is Rs. 50 per tonne. The cost of transportation of overburden to dump areas is Rs. 50 per tonne. Coal transportation cost to the selling point is Rs. 75 per tonne. The price of coal is Rs. 800 per tonne, If the royalty and tax to the state is Rs. 50 per tonne, the nominal profit in rupees is

A

2,00,000

B

20,00,000

C

30,00,000

D

50,00,000

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

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

The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram, and a = Area of plunger)

A

(W/p) × (A/a)

B

(p/W) × (a/A)

C

(W/p) × (a/A)

D

(p/W) × (A/a)

The efficiency of a hydraulic press is given by (where W = Weight lifted by ram, P = Force applied on plunger, A = Area of ram and a = Area of plunger)

A

$$\frac{{\text{W}}}{{\text{p}}} \times \frac{{\text{A}}}{{\text{a}}}$$

B

$$\frac{{\text{p}}}{{\text{W}}} \times \frac{{\text{a}}}{{\text{A}}}$$

C

$$\frac{{\text{W}}}{{\text{p}}} \times \frac{{\text{a}}}{{\text{A}}}$$

D

$$\frac{{\text{p}}}{{\text{W}}} \times \frac{{\text{A}}}{{\text{a}}}$$

The average weight of a group of 10 girls is 48 kilograms. If 2 girls R and S, replace by P and Q then the new average weight is 46 kg. The weight of P is equal to the weight of Q and the weight of R is equal to the weight of S, another girl T joins the group and the new average weight of the group becomes 46 kg. The weight of T is equal to the weight of P. What is the weight (in kg) of R?

A

50

B

56

C

54

D

52

Which one is incorrect? 1. Kumabaram Lift Canal-Older name - Nohar Sohwa Lift Canal. 2. Kawar sen Lift Canal-Older name - Lunaksar Lift Canal. 3. Panna Lal Lift Canal - Older name - Gajner Lift canal. 4. Veer Tejaji Lift Canal-Older name - Bagdsar.

A

1 only

B

2, 3 only

C

3 only

D

None of these

Ram's son's age is $$\frac{1}{3}$$ of Ram's wife's age. Ram's wife's age is $$\frac{4}{5}$$ of Ram's age and Ram's age is $$\frac{3}{5}$$ of Ram's father's age. Find the age of Ram's son, if Ram's father is 50 years old ?

A

6 years

B

8 years

C

10 years

D

12 years

A hydraulic press has a ram of 15 cm diameter and plunger of 1.5 cm. It is required to lift a weight of 1 tonne. The force required on plunger is equal to

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