Practice Test: Question Set - 02
1. Reheat cycle in steam power plant is used to
- (A) Utilize heat of flue gases
- (B) Increase thermal efficiency
- (C) Improve condenser performance
- (D) Reduce loss of heat
2. In a regenerative feed heating cycle, the greatest economy is affected
- (A) When steam is extracted from only one suitable
point of steam turbine
- (B) When steam is extracted from several places in
different stages of steam turbine
- (C) When steam is extracted only from the last
stage of steam turbine
- (D) When steam is extracted only from the first
stage of steam turbine
3. Thorium Breeder Reactors are most suitable for India because
- (A) These develop more power
- (B) Its technology is simple
- (C) Abundance of thorium deposits are available
in India
- (D) These can be easily designed
4. The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is
- (A) 0.555
- (B) 0.578
- (C) 0.5457
- (D) 0.6
5. In De Laval steam turbine
- (A) The pressure in the turbine rotor is approximately
same as in condenser
- (B) The pressure in the turbine rotor is higher
than pressure in the condenser
- (C) The pressure in the turbine rotor gradually
decreases from inlet to exit from condenser
- (D) None from the above
6. The value of reheat factor normally varies from
- (A) 0.5 to 0.6
- (B) 0.9 to 0.95
- (C) 1.02 to 1.06
- (D) 1.2 to 1.6
7. In a surface condenser if air is removed, there is
- (A) Fall in absolute pressure maintained in condenser
- (B) Rise in absolute pressure maintained in condenser
- (C) No change in absolute pressure in the
condenser
- (D) Rise in temperature of condensed steam
8. For the safety of a steam boiler the numbers of safety valves fitted are
- (A) Four
- (B) Three
- (C) Two
- (D) One
9. Steam pressure in a steam power station, which is usually kept nowadays is of the order of
- (A) 20 kgf/cm2
- (B) 50 kgf/cm2
- (C) 100 kgf/cm2
- (D) 150 kgf/cm2
10. Method which is commonly applied for unloading the coal for small power plant is
- (A) Lift trucks
- (B) Coal accelerators
- (C) Tower cranes
- (D) Belt conveyor
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