Home » Mechanical Engineering » IC Engines and Nuclear Power Plants

Neutron economy: effect of a reflector in a nuclear power plant Statement: In nuclear power plants, adding a reflector reduces the fuel requirement because more neutrons are returned to the core to sustain the chain reaction. Decide whether the statement is correct.

Difficulty: Easy

True

Correct Answer: True

Explanation:

Concept
A reflector surrounding the core scatters and returns leakage neutrons back into the fuel region, improving neutron economy. This allows achieving criticality with less fissile inventory or enhances margin for a given loading.

Final Answer
True

← Previous Question Next Question→

More Questions from IC Engines and Nuclear Power Plants

Thorium fuel cycle: production pathway of U-233 How is fissile U-233 obtained in reactor systems? Choose the correct option.
Improving brake power of a diesel engine (other parameters constant) Which change will increase brake power output for a given engine configuration? Choose the correct option.
Primary fuel used in nuclear power plants (common fissile) Identify the principal fissile fuel widely used to sustain the chain reaction in thermal power reactors. Choose the correct option.
Effect of coolant temperature on knocking tendency in a petrol (SI) engine How does increasing the cooling-water temperature influence the knocking tendency in a spark-ignition petrol engine? Choose the correct option.
Terminology in SI engines: identify whether “detonation” is also called knocking or pinking. Statement to evaluate: “The detonation phenomenon is also referred to as engine knocking or pinking.” Choose whether the statement is correct.
Knock rating reference fuels for spark-ignition engines: choose the correct pair used to define the octane scale. Context: Knock intensity in SI engines is calibrated using blends of two standard reference fuels. Select the correct pair that forms the basis of the octane number scale.
Valve positions during compression in a four-stroke petrol engine: evaluate the statement. Statement: “During the compression stroke the charge is compressed when both the inlet and exhaust valves are closed.” Choose whether the statement is correct.
Use of ordinary (light) water as a reactor moderator with enriched uranium fuel: evaluate the statement. Statement: “Ordinary water is sometimes used as a moderator when enriched uranium is used as fuel in nuclear power plants.” Choose whether the statement is correct.
Purpose of supercharging an engine: select the most complete objective. Context: Supercharging increases intake air density for higher specific output. Choose the correct statement describing why engines are supercharged.
Key requirement of a good I.C. engine combustion chamber: choose the best criterion. Select the most appropriate characteristic of a well-designed combustion chamber.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion