A Multiple-Choice Test Has 30 Questions and Each One Has

question 142

Multiple Choice

A multiple-choice test has 30 questions and each one has five possible answers,of which one is correct.If all answers were guesses,find the probability of getting exactly four correct answers.

• A).0604
• B).1325
• C).2552
• D).8000

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Definitions:

Wave-wound

A method of winding used in electrical machinery where coils are connected in series to form a continuous wave-like pattern, optimizing the use of conductor material.

Field Excitation

The process of applying an external current to the field winding of a generator or motor to produce the necessary magnetic field for operation.

Input Torque

The torque applied to a system or component, often measured to understand the mechanical power required to operate a device or machinery.

Armature Excitation

The process of applying voltage to the armature winding of a generator or motor, which induces magnetic fields and enables motion or power generation.