# One kilowatt hour energy is equivalent to

1.  1000 J

2.  360 kJ

3.  3600 kJ

4.  3600 kW/sec

4

3600 kJ

Explanation :
No Explanation available for this question

# Which of the following gases has the highest calorific value

1.  producer gas

2.  coal gas.

3.  water gas

4.  blast furnace gas

4

coal gas.

Explanation :
No Explanation available for this question

# 100% efficiency of a thermal cycle cannot be achieved because of

1.  frictional losses

2.  it is not possible to achieve 0°K temperature

3.  leakage

4.  non-availability of ideal substance

4

it is not possible to achieve 0°K temperature

Explanation :
No Explanation available for this question

# For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is

1.  1 kg

2.  4/3kg

3.  8/3kg

4.  2 kg

4

4/3kg

Explanation :
No Explanation available for this question

# The diameter of Cornish boiler is of the order of

1.  1-2 m

2.  1.5-2.5 m

3.  2-3 m

4.  2.5-3.5 m

4

1-2 m

Explanation :
No Explanation available for this question

# The length of Cornish boiler is of the order of

1.  2-4 m

2.  3-5 m

3.  5-7.5 m

4.  7-9 m

4

5-7.5 m

Explanation :
No Explanation available for this question

# The diameter of fire tube of Cornish boiler compared to its shell is

1.  one half

2.  one third

3.  one-fifth

4.  two-fifth

4

one half

Explanation :
No Explanation available for this question

# Steam engine operates on

1.  carnot cycle

2.  joule cycle

3.  Stirling cycle

4.  brayton cycle

4

brayton cycle

Explanation :
No Explanation available for this question

# The change in internal energy in steam engines equals to

1.  work done during the Rankin cycle

2.  work done during compression.

3.  work done during adiabatic expansion

4.  change in enthalpy

4

work done during the Rankin cycle

Explanation :
No Explanation available for this question

# Water tube boilers are those in which

1.  flue gases pass through tubes and water around it

2.  water passes through the tubes and flue gases around it

3.  work is done during adiabatic expansion

4.  change in enthalpy

4