A Nuclear Reactor Is Operating at a Certain Power Level

question 32

Multiple Choice

A nuclear reactor is operating at a certain power level, with its multiplication factor adjusted to unity. The control rods are now used to reduce the power output to one-half its former value. After the reduction in power the multiplication factor is maintained at:

• A) 1/2
• B) 1/4
• C) 2
• D) 4
• E) 1

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Definitions:

Myelin Sheath

A fatty layer that surrounds the axon of some neurons, increasing the speed at which electrical impulses propagate along the nerve cell.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle contraction and sensory perception.

Axons

Long, slender projections of neurons that conduct electrical impulses away from the neuron's cell body, facilitating communication within the nervous system.

Neurons

Specialized cells within the nervous system that transmit information through electrical and chemical signals.