Question #81394

Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of____________________?

Options:

A) 1 :1

B) 2: 1

C) 1 : 2

D) 4 : 1

E) E. 1 : 4

Answer: Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of 1 : 2.

Previous Next

Mechanical Engineering Related Questions

Q1.

Which is the most commonly used shape of notch for fluctuating discharge?
Q2.

Adiabatic compression is one in which___________________?
Q3.

The- most efficient method of compressing air is to compress it_________________?
Q4.

Isothermal compression effeicency can be attained by running the compressor__________________?
Q5.

Isothermal compression efficiency, even when running at high speed, can be approached by using A. multi-stage compression B. cold water spray C. both A. and B. above D. fully insulating the cylinder E. high stroke_________________?
Q6.

The pressure and temperature conditions of air at the suction of compressor are_________________?
Q7.

The overall isothermal eiffciency of compressor is defined as the ratio of_______________?
Q8.

1 m of air at atmospheric condition weighs approximately__________________?
Q9.

Free air is the air at________________?
Q10.

The capacity of a compressor is 5 m /mih. 5 m /min refers to_______________?

Test Your Knowledge

Want to practice more questions like this? Take a quiz in this category!

Take a Quiz

Question #81394

Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of____________________?

Options:

Mechanical Engineering Related Questions

Category

Test Your Knowledge

Share This Question

AdBlock Detected

How to disable your ad blocker:

Popular Categories

More Categories

Explore More

Question #81394

Two balls of same material and finish have their diameters in the ratio of 2 : 1 and both are heated to same temperature and allowed to cool by radiation. Rate of cooling by big ball as compared to smaller one will be in the ratio of____________________?

Options:

Mechanical Engineering Related Questions

Category

Test Your Knowledge

Share This Question

AdBlock Detected

How to disable your ad blocker: