The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to

What is the value of Prandtl number if the value of Nusselt number is 496 and Reynolds number is 120000?

A

4.67

B

5.67

C

4

D

7.3

Prandtl and Reynolds analogy are same, when Prandtl number is

A

0.5

B

1

C

> 2

D

1.5

The Nusselt number depends only on the Rayleigh number (product of the Grashof and Prandtl numbers) in the limit of

A

Low Grashof number and low Prandtl number

B

Low Grashof number and high Prandtl number

C

High Grashof number and low Prandtl number

D

High Grashof number and high Prandtl number

Two stores A and B bought the same product from the company at the same price. Store A marked the price of the product 50% above its cost price and offered two successive discounts of 15% and 10% on the marked price of the product, while store B marked the price of the product 60% above its cost price and offered two successive discounts of 15% and 12% on the marked price of the product. If a customer buys the product from store B, he has to pay Rs. 986 more than that at store A. At what price the two stores bought the product from the company?

A

Rs. 15000

B

Rs. 20000

C

Rs. 25000

D

Rs. 30000

E

Rs. 35000

The product of Reynolds number and Prandtl number is known as

A

Stanton number

B

Biot number

C

Peclet number

D

Grashoff number

Product of Prandtl number and Reynolds number is also known as?

A

Peclet number

B

Prandtl number

C

Rayleigh number

D

Biot number

Which of the following statement (s) is/are true about the following eliminations? (1) Hoffmann product is major product in I (2) Saytzeff product is major product in I (3) Hoffmann product is major product in II (4) Saytzeffproduct is major product in II

A

1 and 2

B

1 and 4

C

2 and 3

D

3 and 4

Nusselt number is a function of Prandtl number and __________ number of fluid in natural convection heat transfer.

A

Grashoff

B

Biot

C

Stantan

D

Reynolds

For the free convection circumstances, the following dimensionless numbers apply (i) Grashof number (ii) Prandtl number (iii) Nusselt number Identify the correct answer

A

ii and iii

B

ii only

C

i and ii

D

i, ii and iii

If the Nusselt Number for the jacket side is calculated then what is the definition of Dj? NNu = Nusselt number of jacket fluid = (hJ * DJ / kJ).

A

Diameter of jacket tubes

B

Equivalent cross flow diameter of the jacket

C

Diameter of the vessel

D

Difference of the diameter of jacket and vessel

The ratio of Nusselt number and the product of Reynold's number and Prandtl number is equal to

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