Electrical Engineering : Power Plant Engineering QUESTIONS AND ANSWERS :: part2 : 6 to 10
Following Electrical Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :
6.The draught produced by chimney of given height at given outside temperature |
| decreases if the chimney gas temperature increases |
| increases if the chimney gas temperature increases |
| remains same irrespective of chimney gas temperature |
| may increase or decrease |
7.The artificial draught normally is designed to produce |
| less smoke |
| more draught |
| less chimney gas temperature |
| all of the above |
8.The critical pressure ratio of a convergent nozzle is defined as |
| the ratio of outlet pressure to inlet pressure of nozzle |
| the ratio of inlet pressure to outlet pressure of nozzle |
| the ratio of outlet pressure to inlet pressure only when mass flow rate per unit area |
| nimum |
9.The efficiency of chimney is approximately |
| 80% |
| 40% |
| 20% |
| 0.25% |
10.The isentropic expansion of steam through nozzle for the steam initially superheated at inlet is approximated by equation |
| pvls=C |
| pv1126 = C |
| pv1A = C |
| pv = C |
More Power Plant Engineering QUESTIONS AND ANSWERS available in next pages
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