⚙️ IC Engines & Nuclear Power Plant MCQ Questions with Answers & Live Score

Practice 100 important IC Engines and Nuclear Power Plant MCQs with answers, detailed explanations, and exam-focused concepts

Attempt all questions, choose the correct option, and check your live score instantly to boost your exam preparation

IC Engines MCQ Questions (1–50)

These IC Engines MCQ questions cover important topics such as thermodynamic cycles (Otto, Diesel, and Dual cycle), combustion and fuel injection systems, engine performance parameters, and emission control techniques. These questions are designed for GATE, IES, SSC JE, and other mechanical engineering exams.

Nuclear Power Plant MCQ Questions (51–100)

This section includes Nuclear Power Plant MCQs based on nuclear reactions, reactor types, moderators, coolants, control rods, and radiation safety. These questions help strengthen concepts for competitive exams like GATE, SSC JE, and UPSC.

Question 1: In an ideal Otto cycle, the efficiency is primarily a function of compression ratio and which other parameter?

Question 2: In diesel engines, ignition delay period is defined as:

Question 3: Knocking in SI engines is mainly due to:

Question 4: In IC engines, volumetric efficiency decreases with increase in:

Question 5: In dual cycle, heat addition occurs at:

Question 6: In CI engines, knocking is reduced by:

Question 7: Specific fuel consumption is defined as:

Question 8: Supercharging in IC engines increases power by:

Question 9: In IC engines, mean effective pressure represents:

Question 10: Octane number indicates:

Question 11: Nuclear fission process releases energy due to:

Question 12: Moderator in nuclear reactor is used to:

Question 13: Control rods in nuclear reactors are made of materials that:

Question 14: In nuclear reactors, coolant is used to:

Question 15: Chain reaction in nuclear reactor is sustained when:

Question 16: Heavy water is used as moderator because:

Question 17: Fast breeder reactors are designed to:

Question 18: Radiation shielding is required to:

Question 19: Nuclear fusion requires:

Question 20: Pressurized water reactor uses:

Question 21: In an SI engine, flame speed is significantly affected by which parameter under high turbulence conditions?

Question 22: In diesel engines, delay period consists of physical and chemical delay. Physical delay is mainly influenced by:

Question 23: In IC engines, brake power is always less than indicated power due to:

Question 24: In a turbocharged engine, the compressor is driven by:

Question 25: In dual combustion cycle, efficiency increases when:

Question 26: In SI engines, pre-ignition occurs due to:

Question 27: Brake thermal efficiency is defined as:

Question 28: In IC engines, scavenging refers to:

Question 29: In diesel engines, knocking is more severe at:

Question 30: In IC engines, air-fuel ratio affects emissions primarily by:

Question 31: In nuclear reactors, multiplication factor greater than unity indicates:

Question 32: In boiling water reactor (BWR), steam is generated:

Question 33: In nuclear power plants, enrichment of uranium is required to:

Question 34: In nuclear reactors, reflector is used to:

Question 35: In fast breeder reactors, coolant used is generally:

Question 36: In nuclear reactors, delayed neutrons are important because:

Question 37: In nuclear shielding, lead is used because:

Question 38: In nuclear reactors, criticality condition is achieved when:

Question 39: In nuclear fusion, main fuel used is:

Question 40: In nuclear power plants, efficiency is generally lower because:

Question 41: In SI engines, detonation leads to:

Question 42: In IC engines, indicated power is measured using:

Question 43: In nuclear reactors, control rods are inserted to:

Question 44: In IC engines, knocking tendency increases with:

Question 45: In nuclear reactors, moderator effectiveness depends on:

Question 46: In IC engines, two-stroke engines have higher power because:

Question 47: In nuclear reactors, fuel rods are designed to:

Question 48: In IC engines, brake mean effective pressure is used to:

Question 49: In nuclear reactors, coolant must have:

Question 50: In IC engines, knocking can be reduced by:

Question 51: In nuclear reactors, thermal neutrons are preferred because:

Question 52: In IC engines, compression ratio is defined as:

Question 53: In nuclear reactors, supercritical condition leads to:

Question 54: In IC engines, knocking is detected by:

Question 55: In nuclear reactors, shielding is designed to absorb:

Question 56: In IC engines, higher compression ratio results in:

Question 57: In nuclear reactors, neutron flux is defined as:

Question 58: In IC engines, indicated thermal efficiency depends on:

Question 59: In nuclear reactors, breeder ratio indicates:

Question 60: In IC engines, efficiency is highest for:

Question 61: In SI engines, the phenomenon of flame quenching near cylinder walls is mainly due to:

Question 62: In diesel engines, rate of pressure rise is highest during:

Question 63: In IC engines, volumetric efficiency can exceed 100% in:

Question 64: In IC engines, knocking tendency in SI engines decreases with:

Question 65: In IC engines, swirl is introduced to:

Question 66: In IC engines, mechanical efficiency is defined as:

Question 67: In IC engines, exhaust gas recirculation (EGR) reduces:

Question 68: In IC engines, knocking intensity is highest at:

Question 69: In IC engines, brake specific fuel consumption is minimum at:

Question 70: In IC engines, turbo lag refers to:

Question 71: In nuclear reactors, prompt neutrons are released:

Question 72: In nuclear reactors, control rods are typically made of:

Question 73: In nuclear reactors, reactivity is defined as:

Question 74: In nuclear reactors, subcritical condition means:

Question 75: In nuclear reactors, xenon poisoning refers to:

Question 76: In nuclear reactors, burnup is defined as:

Question 77: In nuclear reactors, delayed neutrons originate from:

Question 78: In nuclear reactors, Doppler effect refers to:

Question 79: In nuclear reactors, void coefficient is associated with:

Question 80: In nuclear reactors, SCRAM is used for:

Question 81: In IC engines, detonation differs from knocking in that:

Question 82: In IC engines, air standard efficiency assumes:

Question 83: In IC engines, knocking can be reduced by retarding spark timing because:

Question 84: In IC engines, lean mixture results in:

Question 85: In nuclear reactors, moderator temperature coefficient should be:

Question 86: In nuclear reactors, fuel enrichment level affects:

Question 87: In nuclear reactors, neutron life cycle includes:

Question 88: In nuclear reactors, thermal utilization factor represents:

Question 89: In nuclear reactors, resonance escape probability indicates:

Question 90: In nuclear reactors, fast neutrons are slowed by:

Question 91: In an SI engine operating near knocking limit, which parameter adjustment is most effective in delaying auto-ignition without significantly reducing power output?

Question 92: For a diesel engine, the air standard efficiency of the dual cycle approaches that of Otto cycle when:

Question 93: In IC engines, the Willans line method is used to determine:

Question 94: In a turbocharged IC engine, if intercooling is applied, the primary thermodynamic benefit is:

Question 95: In nuclear reactors, the four-factor formula is primarily used to evaluate:

Question 96: In a thermal nuclear reactor, if the moderator temperature increases, the reactivity generally decreases due to:

Question 97: In nuclear reactors, the concept of buckling is associated with:

Question 98: In IC engines, the Morse test is conducted to determine:

Question 99: In nuclear reactors, resonance absorption primarily affects:

Question 100: In IC engine performance analysis, if brake power remains constant but fuel consumption increases, the brake thermal efficiency will:

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⚙️ IC Engines & Nuclear Power Plant MCQ Questions with Answers & Live Score

IC Engines MCQ Questions (1–50)

Nuclear Power Plant MCQ Questions (51–100)

🛠️ Automobile Engineering MCQ (Exam Objective)

Mechanical MCQ Topics