MCQ
Small Modular Reactors MCQ - Practice Questions with Answers
Solve 77 Small Modular Reactors questions for RAS/RPSC preparation.
Practice questions
Q1Consider the following statements about SMR technology options: 1. The only technology option being pursued for SMRs is molten-salt reactor technology. 2. Many near-term SMR candidates are based on proven water-cooled reactor technologies. 3. Some fast SMR designs may use liquid-metal coolants such as sodium or lead. Which of the statements given above are correct?
Statement 1 is incorrect because World Nuclear Association lists four main technology options, not only molten-salt reactors. Statements 2 and 3 are correct: many near-term candidates are water-cooled, while some fast reactors may use sodium or lead coolants.
Q2Consider the following statements about Small Modular Reactors (SMRs): 1. SMRs are generally designed to produce electricity up to 300 MW(e) per module. 2. SMRs can be designed for factory construction and shipment to utilities for installation. 3. SMRs are, by definition, only molten-salt reactors. Which of the statements given above are correct?
Statement 1 is correct: the IAEA definition places SMRs up to 300 MW(e) per module. Statement 2 is correct because SMRs may be factory-built and shipped for installation. Statement 3 is incorrect; SMRs include several technology routes and are not limited to molten-salt reactors.
Q3Consider the following statements about fuel enrichment in some SMR designs: 1. EIA states that HALEU is uranium enriched between 20% and 40% uranium-235. 2. EIA states that HALEU is more highly enriched than the sub-5% LEU fuel currently used in most nuclear reactors. 3. EIA states that higher enrichment could improve efficiency and performance, allow smaller reactor footprints, and reduce spent fuel waste. Which of the statements given above are correct?
Statement 1 is incorrect: EIA defines HALEU as between 5% and under 20% uranium-235, not 20-40%. Statements 2 and 3 are correct according to EIA's explanation of HALEU and higher enrichment.
Q4Under the Nuclear Mission mentioned by Dr Jitendra Singh, what combination was announced for small modular reactors?
The release states that the Nuclear Mission has an allocation of Rs 20,000 crore and plans five small modular reactors by 2033. The other options change the number of reactors, deadline or allocation and therefore do not match the official statement.
Q5Consider the following statements: 1. Small Modular Reactors are generally advanced reactors that produce electricity of up to 300 MW(e) per module. 2. They can be deployed either as a single-module or a multi-module plant. 3. The IAEA defines SMRs as reactors of up to 700 MW(e) per module. 4. Their modularity means that the complete reactor must be fabricated only at the final plant site. Which of the statements given above are correct?
Statements 1 and 2 are true: IAEA describes SMRs as advanced reactors up to 300 MW(e) per module and says they may be single- or multi-module plants. Statement 3 is false because the cited limit is 300 MW(e), not 700 MW(e). Statement 4 is false because SMRs are designed for factory construction and shipment to utilities, not only on-site fabrication.
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6Consider the following statements about SMR economics and applications: 1. The European Commission says SMRs need less space and cooling water than large nuclear plants. 2. The European Commission says SMRs offer greater flexibility for site selection than large nuclear plants. 3. The European Commission says SMRs cannot supply heat for industrial applications, district heating or hydrogen production. 4. The European Commission says SMRs can be produced in series, enabling production-cost efficiency through economies of scale. Which of the statements given above are correct?
7Consider the following statements about the high-temperature gas-cooled reactor in India's SMR programme: 1. It is stated as having capacity up to 5 MWth. 2. It is meant for hydrogen generation. 3. It is stated as a 55 MWe reactor meant for remote off-grid electricity supply. Which of the statements given above are correct?
8Consider the following statements about deployment logic for SMRs: 1. Their smaller capacity can make deployment possible where large plants may be impractical, including remote communities and small grids. 2. SMRs may have lower capital outlay per unit than large-scale equivalents. 3. Large-scale reactors are unsuitable for reliable 24/7 electricity supply. 4. Smaller core sizes and passive safety features of some SMRs offer the promise of smaller emergency planning zones. Which of the statements given above are correct?
9Consider the following statements about passive safety and SMR design: 1. The European Commission says SMR safety principles mostly rely on simple phenomena such as natural circulation to cool the reactor core. 2. It says such cooling can occur during incidents or accidents with little or no operator intervention to bring the reactor to a safe state. 3. It says passive safety systems require more safety-grade pumps, pipes and cables to reduce failure risk. 4. It says SMRs incorporate passive and inherent safety features, simpler designs and higher coolant fractions. Which of the statements given above are correct?
10Consider the following statements about Small Modular Reactors: 1. The IAEA describes SMRs as advanced reactors producing electricity of up to 300 MW(e) per module. 2. The IAEA states that SMRs are deployable only as multi-module plants, not as single-module plants. 3. SMRs are designed to be built in factories and shipped to utilities for installation as demand arises. 4. The IAEA says SMRs are intended only for electricity generation and not for cogeneration or non-electric applications. Which of the statements given above are correct?
11Consider the following statements: 1. World Nuclear Association says SMRs seek to apply modularity, factory fabrication and serial production to nuclear energy. 2. WNA says SMRs offer narrower deployment opportunities than large reactors and are meant for fewer applications. 3. WNA says small reactors are of interest for both electricity generation and process heat. 4. WNA defines microreactors as designs typically above 300 MWe. Which of the statements given above are correct?
12Consider the following statements about advanced SMR technology in the United States: 1. SMR designs are aimed at reducing capital costs and increasing siting flexibility. 2. Large-scale nuclear designs typically range between 550 MW and 1,500 MW per unit. 3. SMRs are described as having a capacity greater than 1,500 MW per unit. Which of the statements given above are correct?
13Consider the following statements about Small Modular Reactors: 1. World Nuclear Association says there are over 100 SMR designs at various stages of development. 2. It notes a small number of SMRs already operating and under construction. 3. It says there are no SMR designs under development. Which of the statements given above are correct?
14Consider the following statements about BSMR-200: 1. Its concept design includes sizing of the nuclear reactor and the primary heat transport system. 2. Its demonstration unit erection and start-up was expected in six years after financial approval. 3. Its expected lead-unit cost was stated as Rs 570 crore. Which of the statements given above are correct?
15Consider the following statements about the 'modular' part of SMRs: 1. Factory fabrication can include components or even entire reactor modules built under controlled conditions. 2. SMR designers plan serial production to achieve economies of series. 3. Factory-fabricated modules may be shipped to site for assembly, potentially reducing construction time and costs. 4. The modular approach means no major component is assembled in a factory or specialised facility before transport. Which of the statements given above are correct?