FREE MILITARY AND STUDY GAMES ABOUT NAVEDTRA

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FREE MILITARY AND STUDY GAMES ABOUT NAVEDTRA

14173A CH3 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -43 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: What is used to fight electrical fires because it is nonconductive and the safest to use in terms of electrical safety?

Answer:

Carbon dioxide (CO2) Question 2: The equivalent resistance of a parallel circuit is always less than the resistance of any what?

Answer:

Branch Question 3: Which electrical device property is the ratio of power converted to useful energy divided by the power consumed by the device?

Answer:

Efficiency Question 4: What permits control of the electrical device and interrupts the current delivered to the load?

Answer:

switch

Question 5: Fatalities from voltages as low as how many volts have been recorded?

Answer:

30V Question 6: Any complex circuit consisting of resistances can be redrawn (reduced) to a basic equivalent circuit containing the voltage .source and a single resistor representing total resistance. This process is called reduction to a what?

Answer:

Equivalent circuit Question 7: What is any device called in which an electrical current flows and which changes this electrical energy into a more useful form?

Answer:

Load Question 8: Approximately what percent of the load current should the current in a voltage divider resistor equal?

Answer:

10%

Question 9: What unit is electrical power measured in?

Answer:

Watts Question 10: Which law states that "The algebraic sum of the voltage drops in any closed path in a circuit and the electromotive forces in that path is equal to zero."?

Answer:

Kirchhoff's voltage law Question 11: Which technique has been developed to provide aid to a person who has stopped breathing and suffered a cardiac arrest?

Answer:

Cardiopulmonary Resuscitation (CPR)

Question 12: What is the total resistance of resistors in parallel also referred to as?

Answer:

Equivalent resistance

Question 13: What can be easily constructed to analyze a circuit?

Answer:

graph

Question 14: What is the basic unit of power?

Answer:

watt Question 15: Wirewound resistors are made in values between 5 and how many watts?

Answer:

200 Question 16: Which type of circuits consist of both series and parallel elements?

Answer:

combination Question 17: What is an arbitrarily chosen point to which all other points in the circuit are compared?

Answer:

reference point Question 18: In most circuits, the actual power used by a resistor is considerably less than the power rating of the resistor because a safety factor of what percent is used?

Answer:

50%

Question 19: What is a basic tool used to solve electrical problems?

Answer:

algebra

Question 20: When resistors with wattage ratings greater than how many watts are needed, wirewound resistors are used?

Answer:

greater than 5 watts Question 21: All sources of electromotive force have some form of internal resistance which causes a drop in what as current flows through the source?

Answer:

Terminal voltage Question 22: What are installed in equipment circuits to prevent damage cause by increases in current?

Answer:

fuses Question 23: What indicates the rate at which devices convert electrical energy into another form of energy?

Answer:

Power rating

Question 24: How many watts are required to equal one horsepower?

Answer:

746 W Question 25: Tests have shown that body resistance under favorable conditions may be as low as 300 ohms, and possibly as low as how many ohms from temple to temple if the skin is broken?

Answer:

100 ohms Question 26: What is the technician's main aid in troubleshooting a circuit in a piece of equipment?

Answer:

schematic diagram