GATE 2024 - 2025 Mechanical Engineering Question Paper Pdf - 2

Question: 6

Presence of moisture in fuel oil would

(A) reduce flame length

(B) causes sputtering, possibly extinguishing flame

(C) aid in proper combustion

(D) keep the burner tips cool

Question: 7

The condition of steam in boiler drum is always

(A) wet

(B) dry

(C) superheated

(D) supersaturated

Question: 8

The best suited coal for chain or travelling grate stoker boiler is

(A) least ash content coal

(B) high sulphur coal

(C) pulverised coal

(D) non coking or free burning coal

Question: 9

Which of the following coal variety has low calorific value?

(A) washed coal

(B) steam coal

(C) bituminous coal

(D) lignite

Question: 10

The commonly used material of pipes in condensers is

(A) aluminium

(B) admiralty brass

(C) cast iron

(D) stainless steel