1000+ Power Plant Engineering Questions and Answers Pdf - 2

Question: 6

In coal preparation plant, magnetic separators are used to remove

(A) sand

(B) iron particles

(C) dust

(D) clinkers

Question: 7

In a four stroke cycle petrol engine, during suction stroke

(A) mixture of petrol and air is sucked in

(B) only petrol is sucked in

(C) only air is sucked in

(D) none of the above

Question: 8

The voltage of a single solar cell is

(A) 0.2 V

(B) 0.5 V

(C) 1.0 V

(D) 2.0 V

Question: 9

Primary air is that air which is used to

(A) provide air around burners for getting optimum combustion

(B) transport and dry the coal

(C) increase the flame length

(D) reduce the flame length

Question: 10

The percentage O₂ by weight in atmospheric air is

(A) 18%

(B) 23%

(C) 77%

(D) 79%