B:-Statement 2

C:-both are incorrect
D:-both are correct
Correct Answer:- Option-D

Question40:-In the super heater section of a boiler which combination of following
heating methods is used?

1. inductive

2. radiative

3. convective

4. conductive

A:-1 and 2

B:-2 and 3

C:-3 and 4

D:-1, 2,3 and 4

Correct Answer:- Option-B

Question41:-Statement 1 - In a boiler, steam trap is used to reduce sediments and
impurities

Statement 2 - In a boiler, blow off cock is used to reduce condensate accumulation.
Which of the above is correct regarding the operation of a boiler?

A:-Statement 1
B:-Statement 2

C:-Both are incorrect
D:-Both are correct
Correct Answer:- Option-C

Question42:-Assertion - All high pressure boilers are water tube boilers
Reason - In water tube boiler are high pressure steam passes through small
diameter tubes, 'Hoop stresses' developed is minimum

Which of the above is true regarding the working of a high pressures boiler?

A:-Assertions and reasons are true. Reason is correct explanation for Assertion
B:-Assertion is true but reason is false

C:-Assertion is false but reason is true

D:-Both are true but reason is not the correct explanation

Correct Answer:- Option-A

Question43:-Which of the following are true regarding the operation of a Benson
boiler?

1. It is a fire tube boiler

2. It works close to the critical point of water

3. It is known as drumless boiler

4. It has severe maintenance issues

A:-2,3 and 4