Draft is generally provided to make a clearance between the pattern and the mould during pattern extraction.

The maximum harbour depth below lowest low water is generally equal to
(i) loaded draft + 1.2 m when bottom is rock
(ii) loaded draft + 1.8 m when bottom is soft
(iii) loaded draft + 1.2 m when bottom is soft
(iv) loaded draft + 1.8 m when bottom is rock

A

(i) and (ii) are correct

B

(i) and (iii) are correct

C

(ii) and (iv) are correct

D

(iii) and (iv) are correct

When a pattern is to be withdrawn from the mould, it is first shaken, by striking over it from side to side, so that its surface may be free of the adjoining sand wall of the mould. That causes the size of the mould cavity increases a little and a negative allowance is to be provided in the pattern to compensate the same, is known as:

A

Draft allowance

B

Rapping allowance

C

Machining allowance

D

Shrinkage allowance

If in a city, the maximum daily draft is 25MLD, fire draft is 35MLD and maximum hourly draft is 40MLD, what is the coincident draft?

A

60MLD

B

40MLD

C

25MLD

D

35MLD

At the mould exit of a continuous caster, the metal consisting of a solidified shell with a liquid metal core exits at the rate of 35 kg S^-1. Given that the latent heat of fusion is 3 × 10⁵ J kg^-1 and the total rate of heat removal by the mould is 4.2 × 10⁶ W, the mass fraction of solid at the mould exit is . . . . . . . .
Assume that both while solid and liquid remain at the melting point, they are in the mould.

A

0.1

B

0.4

C

0.8

D

1.5

Each of the question below consists of a question and three statements number I, II and III given below it. You have to decide whether the data provided in the statement are sufficient to answer the question. Two person X and Y together can make 25% of total number of bricks in 4.8 days. Another person Z can make 50 bricks in a day. What is the time taken by person X and Z together to make the total number of bricks? I. Dimensions of a brick is (3cm × 4cm × 5cm) while the dimension of a cuboids when all the bricks are put together is (72cm × 80cm × 50cm) and ratio of number of days taken by X and Y alone to make the total number of bricks is 3 : 2. II. The total number of bricks is 4800 and person Y can make 150 bricks in day. III. Total volume of all the bricks together is 1.008m3 and dimension of a bricks is (5cm × 6cm × 7cm) and time taken by Z to make total number of bricks is 200 % more than the total time taken by person Y to make total number of bricks.

A

Statement I alone is sufficient.

B

Statement III alone is sufficient.

C

Any one of them alone is sufficient.

D

All I, II and III together are sufficient.

E

Any two of them together are sufficient.

What will be the extraction factor of the process of extraction for the first stage of the extraction under the staged counter current process of extraction?

A

λ = –\(\frac{K Q_E}{Q_R}\)

B

λ = \(\frac{K Q_E}{Q_R}\)

C

-λ = \(\frac{K Q_E}{Q_R}\)

D

λ = \(\frac{K – Q_E}{Q_R}\)

What will be the renal clearance ratio of a drug whose renal clearance is 40ml/min and the clearance of creatinine is 95ml/min?

A

0.421

B

2.38

C

0.010

D

0.025

Consider the following statements: In shell moulding 1) a single parting plane should be provided for mould 2) detachable pattern parts and cores could be included 3) minimum rounding radii of 2.5 mm to 3 mm should be used 4) draft angles of not less than 1° should be used Which of the above statements are correct?

A

1, 3 and 4 only

B

1, 2 and 3 only

C

2, 3 and 4 only

D

1, 2, 3 and 4

Continuous passing of Co2 through the mould can decrease the strength of mould and results in a weak mould.

A

True

B

False

In permanent mould casting, the mould is pre-heated to its operating temperature before the actual use of mould.

A

True

B

False

Draft is generally provided to make a clearance between the pattern and the mould during pattern extraction.

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