Questions 191–200 of 1040. Imported answers require independent review unless marked reviewed.

Topic practice 1040 questionsPage 20 of 104

Question 61

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Aluminium is cast in a cube-shaped mold having dimensions as 20 mm × 20 mm × 20 mm. Another mold of the same mold material is used to cast a sphere of aluminium having a diameter of 20 mm. The pouring temperature for both cases is the same. The ratio of the solidification times of the cube-shaped mold to the spherical mold is ______ (answer in integer).

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Question 62

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A blanking operation is performed on C20 steel sheet to obtain a circular disc having a diameter of 20 mm and a thickness of 2 mm. An allowance of 0.04 is provided. The punch size used for the operation is __________ mm (rounded off to 2 decimal places).

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Question 63

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In an arc welding process, the voltage and current are 30 V and 200 A, respectively. The cross-sectional area of the joint is 20 mm

and the welding speed is 5 mm/s. The heat required to melt the material is 20 J/s. The percentage of heat lost to the surrounding during the welding process is __________ (rounded off to 2 decimal places).

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Question 64

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A flat surface of a C60 steel having dimensions of 100 mm (length) × 200 mm (width) is produced by a HSS slab mill cutter. The 8-toothed cutter has 100 mm diameter and 200 mm width. The feed per tooth is 0.1 mm, cutting velocity is 20 m/min and depth of cut is 2 mm. The machining time required to remove the entire stock is __________ minutes (rounded off to 2 decimal places).

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Question 65

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In a supplier-retailer supply chain, the demand of each retailer, the capacity of each supplier, and the unit cost in rupees of material supply from each supplier to each retailer are tabulated below. The supply chain manager wishes to minimize the total cost of transportation across the supply chain.

Retailer I
Retailer II
Retailer III
Retailer IV
Capacity
Supplier A
11
16
19
13
300
Supplier B
5
10
7
8
300
Supplier C
12
14
17
11
300
Supplier D
8
15
11
9
300
Demand
300
300
300
300

The optimal cost of satisfying the total demand from all retailers is _____ rupees (answer in integer).

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Question 1

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He did not manage to fix the car himself, so he ______ in the garage.
Your answerChoose one option.

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Question 2

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Planting : Seed :: Raise : _____ (By word meaning)
Your answerChoose one option.

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Question 3

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A certain country has 504 universities and 2591 colleges. These are categorised into Grades I, II, and III as shown in the given pie charts.
What is the percentage, correct to one decimal place, of higher education institutions (colleges and universities) that fall into Grade III?
Diagram for Mechanical Engineering question 3

Your answerChoose one option.

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Question 4

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The minute-hand and second-hand of a clock cross each other _______ times between 09:15:00 AM and 09:45:00 AM on a day.
Your answerChoose one option.

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Question 5

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The symbols ◯, ∗, △, and □ are to be filled, one in each box, as shown below.
The rules for filling in the four symbols are as follows.
Every row and every column must contain each of the four symbols.
Every 2×2 square defined by bold lines must contain each of the four symbols.
Which symbol will occupy the box marked with ‘?’ in the partially filled figure?
Diagram for Mechanical Engineering question 5

Your answerChoose one option.

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