A Multiple-Choice Test with 48 Questions Has Four Choices for Each

question 32

Multiple Choice

A multiple-choice test with 48 questions has four choices for each question.What is the probability of getting more than 12 questions correct by just guessing?​

• A)​0.5000
• B)​0.4325
• C)​0.5675
• D)​0.0675

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Definitions:

Three-Phase Transformer

A type of transformer used in three-phase systems, consisting of three sets of primary and secondary windings, used to step up or step down voltages in power distribution.

Single Phase Loads

Electrical loads operating with a single phase power supply, characterized by the use of two wires: one power wire and one neutral wire.

Three Wire Wye

A three-phase power configuration where three branches in a circuit are connected at a common point, resembling the letter Y.

High Leg

In electrical systems, a term referring to a conductor in a delta connection that has a higher voltage with respect to ground than the other two conductors.