Exam preparation MCQs with answers

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The feed check valve is used in order to ______________________?
  • (A)  regulate flow of boiler water
  • (B)  check level of water in boiler drum
  • (C)  recirculate unwanted feed water
  • (D)  allow high pressure feed water to flow to drum and not allow reverse flow to take place
  • (E)  none of the above
The proximate analysis of fuel lists__________________?
  • (A)  various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as per-cents by volume
  • (B)  various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as per-cents by weight
  • (C)  fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
  • (D)  fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash
  • (E)  moisture and ash free heating value