Skip to main content
Sarkari MCQs Government Exam Question Bank
Menu
Question no. 57766

Which of the following fuels is categorized as a primary fuel source________________?

Select your answer for: Which of the following fuels is categorized as a primary fuel source________________?
Show answer

Answer: B. U

Explanation

Natural uranium is mined directly from the earth as a primary fuel source for nuclear power. It exists in nature as a mixture of various uranium isotopes requiring no prior artificial creation. Primary fuels provide the fundamental raw energy input for nuclear fuel cycle operations. Primary energy sources are extracted directly from natural reserves without prior industrial transformation. Uranium ore deposits are processed into yellowcake before undergoing conversion and enrichment. Natural uranium contains the fertile isotope U-238 and fissile U-235.

Nuclear fuel fabrication begins with the processing of primary natural uranium ores. Mining companies supply primary fuel to conversion facilities to support global energy grids. Uranium resource economics dictate long-term nuclear power generation sustainability. Plutonium isotopes are man-made secondary fuels produced artificially inside nuclear reactors. Specific isotopic labels like U-238 represent individual components rather than primary bulk fuels. Secondary fuels require prior irradiation and reprocessing of primary reactor materials.

Subject
Engineering
Topic
—
Difficulty
medium

Related questions

Q1. Identify which of the following represents a secondary fuel source ?

Select your answer for: Identify which of the following represents a secondary fuel source ?
Show answer

Answer: B. U233andPu239

U-233 and Pu-239 are fissile isotopes produced from fertile materials and serve as secondary or manufactured nuclear fuels. These secondary fuels do not occur in significant quantities naturally and must be artificially...

Q2. Nuclear energy yields and reserves are measured in terms of__________________?

Select your answer for: Nuclear energy yields and reserves are measured in terms of__________________?
Show answer

Answer: A. MeV

Nuclear energy releases originate from subatomic binding energy changes inside heavy atomic nuclei. These microscopic energy quantities are conventionally measured and expressed in Mega-electron-volts. Using Mega-electro...

Q3. Isotope Uranium-233 is artificially generated by__________________?

Select your answer for: Isotope Uranium-233 is artificially generated by__________________?
Show answer

Answer: C. by neutron irradiation of thorium

Uranium-233 does not occur in significant quantities naturally and must be produced artificially. The production process involves exposing fertile thorium-232 to neutron irradiation in a reactor. Neutron capture transfor...

Q4. Which nuclear reactor configuration operates without requiring an intermediate heat exchanger for steam generation____________________?

Select your answer for: Which nuclear reactor configuration operates without requiring an intermediate heat exchanger for steam generation____________________?
Show answer

Answer: D. boiling water

In a boiling water reactor, steam is generated directly inside the reactor vessel and routed to the turbine without an intermediate heat exchanger. This direct thermodynamic cycle eliminates secondary heat exchangers, re...

Q5. Which of the following characteristics makes a substance most suitable to serve as a reactor moderator_________________?

Select your answer for: Which of the following characteristics makes a substance most suitable to serve as a reactor moderator_________________?
Show answer

Answer: A. does not absorb neutrons

A reactor moderator must slow down fast neutrons efficiently without capturing them permanently. If a moderator absorbs too many neutrons, the chain reaction will quickly starve and stop. Therefore, a substance must not...

Q6. The octane rating of a gasoline is established by benchmarking its anti-knock performance against which reference hydrocarbons__________________?

Select your answer for: The octane rating of a gasoline is established by benchmarking its anti-knock performance against which reference hydrocarbons__________________?
Show answer

Answer: B. mixture of normal heptane and iso-oc-tane

Gasoline anti-knock quality is evaluated by benchmarking performance against specific reference hydrocarbons. Normal heptane is assigned an octane rating of zero due to its high tendency to knock. Iso-octane is assigned...

New!

Mock Test System is now available!

Prepare for your exam with interactive mock tests. Select your subjects, attempt 100 random MCQs against the clock, and see exactly where you stand.

Start Mock Test