GURU MCQs provides Electrical Engineering MCQs for Job Test and Interview Preparation, suitable for fresh graduates, students, and competitive exams. Most repeated Electrical Engineering MCQs section is frequently encountered in CSS, PMS, Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams, as well as government and private job assessments. Electrical Engineering most repeated MCQs include Analog and Digital Communications, Control Systems, Power Electronics, Electric Circuits, Electric machines, Electrical measurement & units, Utilization of Electrical Energy, Basic Electrical Engineering, Electrical Installation, Power Systems, Testing & maintenance of electrical equipment’s – and much more.
**171. Regenerative cycle thermal efficiency_______________?**
A. **is always greater than simple Rankine thermal efficiency**
B. is greater than simple Rankine cycle thermal efficiency only when steam is bled at particular pressure
C. is same as simple Rankine cycle thermal efficiency
D. is always less than simple Rankine cycle thermal efficiency
**172. In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating________________?**
A. decreases with increase in Rankine cycle efficiency
B. **increases with increase in Rankine cycle efficiency**
C. is unaffected by increase in Rankine cycle efficiency
D. none of the above
**173. 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
**174. The maximum percentage gain in Regenerative feed heating cycle thermal efficiency____________?**
A. **increases with number of feed heaters increasing**
B. decreases with number of feed heaters increasing
C. remains same unaffected by number of feed heaters
D. none of the above
**175. In regenerative cycle feed water is heated by_____________?**
A. exhaust gases
B. heaters
C. **draining steam from the turbine**
D. all above
**176. Reheat cycle in steam power plant is used to________________?**
A. utilise heat of flue gases
B. **increase thermal efficiency**
C. improve condenser performance
D. reduce loss of heat
**177. Mercury is a choice with steam in binary vapour cycle because it has____________?**
A. higher critical temperature and pressure
B. higher saturation temperature than other fluids
C. relatively low vapourisation pressure
D. **all above**
**178. Binary vapour cycles are used to_____________?**
A. increase the performance of the condenser
B. **increase the efficiency of the plant**
C. increase efficiency of the turbine
**179. A steam power station requires space______________?**
A. equal to diesel power station
B. **more than diesel power station**
C. less than diesel power station
**180. Economiser is used to heat_____________?**
A. air
B. **feed water**
C. flue gases
D. all above