Ships are generally powered by___________?
(A) nuclear power plants
(B) hydraulic turbines
(C) diesel engines
(D) steam accumulators
(D) none of the above
Which of the following should be used for extinguishing electrical fires?
(A) Water
(B) Carbon tetrachloride fire extinguisher
(C) Foam type fire extinguisher
(D) CO2 fire extinguisher
Direct conversion of heat into electric power is possible through__________?
(A) fuel cell
(B) batteries
(C) thermionic converter
(D) all of the above
Annual instalment towards depreciation reduces as rate of interest increases with______________?
(A) sinking fund depreciation
(B) straight line depreciation
(C) reducing balances depreciation
(D) none of the above
Annual operating expenditure of a power plant consists of____________?
(A) fixed charges
(B) semi-fixed charges
(C) running charges
(D) all of the above
Power plant having maximum demand more than the installed rated capacity will have utilization factor?
(A) equal to unity
(B) less than unity
(C) more than unity
(D) none of the above
An induction motor has relatively high power factor at__________?
(A) rated r.p.m.
(B) no load
(C) 20 percent load
(D) near full load
By the use of which of the following power factor can be improved?
(A) Phase advancers
(B) Synchronous compensators
(C) Static capacitors
(D) Any of the above
Which of the following is the essential requirement of peak load plant ?
(A) It should run at high speed
(B) It should produce high voltage
(C) It should be small in size
(D) It should be capable of starting quickly
__________ is invariably used for peak load
(A) Nuclear power plant
(B) Steam turbine plant
(C) Pumped storage plant
(D) None of the above