GuruMCQs.com provides all updated Mechanical Engineering Multiple Choice Questions (MCQs). The most frequently repeated mechanical MCQs section is frequently encountered in FPSC, PPSC, ETEA, NTS, Army, Navy, Air Force, educators, and various other competitive exams, as well as government and private job assessments. Most repeated mechanical engineering MCQs cover topics like Engineering Materials, Fluid Mechanics, Hydraulic Machines, Machine Design, Engineering Mechanics, Nuclear Power Plants, Steam Boilers, Engines, Nozzles, Turbines, Compressors, Gas Turbines, Jet Engines, Thermodynamics, Engineering Metrology, Heat Transfer, etc. Preparing with these MCQs can significantly contribute to your success in government job exams and interviews. Whether you are aiming to establish a career in engineering or seeking to enhance your existing skills, the Mechanical Engineering MCQs at www.gurumcqs.com serve as a valuable resource. Stay committed to regular practice and empower yourself with the knowledge needed to excel in your academic and professional endeavors.
81. A nuclear unit becoming critical means_______________?
A. it is generating power to rated capacity
B. it is capable of generating much more than rated capacity
C. there is danger of nuclear spread
D. chain reaction that causes automatic splitting of the fuel nuclei has been established
E. it generates no heat
82. The total energy released in fission of U is__________________?
A. 5 MeV
B. 10 MeV
C. 199 MeV
D. 168 MeV
E. 11 MeV
83. Boiling water reactor employs__________________?
A. boiler
B. direct cycle of coolant system
C. double circuit system of coolant cycle
D. multi pass system
E. single circuit system
84. One gram of uranium will produce energy equivalent to approximately____________________?
A. 1 tonne of high grade coal
B. 4.5 tonnes of high grade coal
C. 10 tonnes of high grade coal
D. 100 tonnes of high grade coal
E. 1000 tonnes of high grade coal
85. Breeder reactor has a conversion ratio of_____________________?
A. unity
B. more than unity
C. less than unity
D. zero
E. infinity
86. Fast breeder reactor uses___________________?
A. boiler
B. direct cycle of coolant system
C. double circuit system of coolant cycle
D. multi pass system
E. single circuit system
87. Which of the following nuclear reactor does not need a heat exchanger for generation of steam____________________?
A. gas cooled
B. liquid metal cooled
C. pressurised water
D. boiling water
E. none of the above
88. The efficiency of a nuclear power plant in comparsion to a conventional thermal power plant is________________?
A. same
B. more
C. less
D. may be less or mote depending on size
E. unpredictable
89. Isotopes of same elements have___________________?
A. same atomic number and different masses
B. same chemical properties but different atomic numbers
C. different masses and different atomic numbers
D. different chemical properties and same atomic numbers
E. same chemical properties and same atomic numbers
90. Amongst the following, the fissionable materials are________________?
A. U233andPu239
B. U23iandPu233
C. U235andPu235
D. U238andPu239
E. U243andPu235