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CRAS Exam Questions and Answers
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CRAS Exam Questions and Answers
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CRAS Exam Questions and AnswersTrue or false a dynamic microphone works on the principle of electromagnetic induction
- Answers -True (A dynamic microphone is basically a little AC generator. It transduces
sound into a very small AC voltage and current usually in the millivolt range)
True or false a shorter, thicker wire will usually have more resistance then a thinner,
longer wire - Answers -False
A ______ cable has the best noise rejection and cancellation - Answers -Balanced
What does a power supply do? - Answers -Converts AC to DC
The output side of a transformer is called the? - Answers -Secondary winding
True or falseVoltage can be described as the pressure that causes current to flow -
Answers -True (Voltage he can be described as the electric pressure causing the
current to flow. When enough pressure applied to a working load, be in a light, speaker
etc. current (the flow of electrons-I) can either be done by the load or flow through the
load. The low typically would be the resistance (opposition -R) in the current)
The input side of a transformer is called the - Answers -Primary winding
What unit of measurement do we use for current - Answers -Amps
The preamp has _______ voltage can compare to voltage gain in a power amp -
Answers -A higher
A transformer conference AC voltage and current to another AC voltage and current -
Answers -True (A transformer works on the principle of electromagnetic induction. And
alternating current flowing in the primary winding generate a changing magnetic field
which induces an AC current in the secondary winding of the transformer)
What are the most important things to know about troubleshooting a problem with a
piece of equipment - Answers -What the manual says And how the equipment works
What is the purpose of impedance matching - Answers -Impedance Matching maximize
his power transfer between amp and speakers, and it also maximizes faulted transfer
between I'll put an input devices. As a result you are maximizing efficiency, maximizing
signal to noise ratio, and maximizing Henry and throughout your signal chain
Which is not a correct equation?
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