Top 550+ Solved Thermal Engineering 2 MCQ Questions Answer
Q. A plant producing both, electrical power & process heat simultaneously is?
a. cogenital plant
b. cogenerial plant
c. cogeneration plant
d. conglomerate plant
Q. In a by-product power cycle?
a. the power is produced initially
b. power production is in the middle stages of the cycle
c. power production is after the cycle has ended
d. none of the mentioned
Q. In terms of cost per MW compared to condensing sets of the same power, the back pressure turbines are?
a. more expensive
b. cheaper
c. costly
d. none of the mentioned
Q. Which of the following is a good medium for constant temperature heating?
a. water
b. steam
c. coolant
d. diesel
Q. The cogeneration plant efficiency nCO if WT, Qi, QH represents turbine work, heat input, heat output respectively is given by?
a. nco = (wt + qi) / qh
b. nco = (wt – qi) / qh
c. nco = (wt + qh) / qi
d. nco = (wt + qh) / qi
Q. If e is the electricity fraction of the total energy output, m is the electric plant efficiency and n is the steam generator efficiency; the heat added per unit total energy output is given by?
a. (1 / m) + ((1 – e) / n)
b. (1 / n) + ((1 – e) / m)
c. (1 / m) + ((1 + e) / n)
d. (1 / n) + ((1 – e) / m)
Q. Pass-out turbines are used in which of these cases?
a. relatively high back pressure
b. small heating requirement
c. only relatively low back pressure
d. both relatively high back pressure and small heating requirement
Q. Which of these is not considered economical for cogeneration?
a. a high fraction of electric to total energy
b. a low fraction of electric to total energy
c. a low fraction of total energy to electric energy
d. none of the mentioned
Q. The energy transfer between the hot fluid and cold fluids is brought about by their complete physical mixing in
a. direct contact heat exchanger
b. regenerators
c. recuperators
d. boilers
Q. Which type of flow arrangement is this?
a. counter flow
b. parallel flow
c. regenerator
d. shell and tube
Q. Which of the following is not an example of recuperators type heat exchanger?
a. automobile radiators
b. condensers
c. chemical factories
d. oil heaters for an aero plane
Q. In how many categories heat exchangers are classified on the basis of direction of flow of fluids?
a. 4 categories
b. 3 categories
c. 2 categories
d. 1 categories