Gas 3 Final Exam questions with complete solutions

Gas 3 Final Exam questions with complete
solutions



The voltage reading across an open switch of an energized (12V) circuit should be? -
c c c c c c c c c c c c c c


answer-Applied Voltage
c c




Resistance in a circuit is measured by using a? - answer-Ohm meter
c c c c c c c c c c c




When the circuit flows in one direction while maintaining a constant voltage is called? -
c c c c c c c c c c c c c c


answer-Direct Voltage
c c




One horsepower of mechanical power is equal to _______ watts of electrical power? -
c c c c c c c c c c c c c


answer-750
c




The number of conductors in a number 14/2 gauge wire is? - answer-2
c c c c c c c c c c c c




Transformers that share a winding or portion of winding are called? - answer-Auto
c c c c c c c c c c c c


transformer
c




The two most important ratings of a capacitor are? - answer-Volts and Microfarads
c c c c c c c c c c c c




Voltage meters are read in ____ with the load? - answer-Parallel
c c c c c c c c c c




Operating controls govern the operation of an electrical load and are always shown in
c c c c c c c c c c c c c


______ position? - answer-Normally Open
c c c c c




One watt is equal how many BTU's? - answer-3.41
c c c c c c c c




On a 120v receptacle the hotline connection are? - answer-Gold
c c c c c c c c c




What is the amount of amperage that could kill a person? - answer-Lowest amount
c c c c c c c c c c c c c




An electron has a ____ charge. - answer-Negative
c c c c c c c




In line amp meters are always read in ____ with a load - answer-Series
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On a 120v receptacle the neutral line connection terminals are? - answer-Silver
c c c c c c c c c c c




The total capacitance of a series circuit that contains of a 5 mf and 10 mf? - answer-3.3
c c c c c c c c c c c c c c c c c

, Total capacitance in parallel circuit that contains of 10 ohms load and a 5 ohms load is? -
c c c c c c c c c c c c c c c c c


answer-15
c




Safety controls are always found in the ____ position? - answer-Closed
c c c c c c c c c c




What is the kilowatt output of an electric heater that has 240v power supply and draws
c c c c c c c c c c c c c c c


30 amps? - answer-7.20 kW
c c c c c




When using 14/2 wire how far must the conductor extend into the electrical box? -
c c c c c c c c c c c c c c


answer-6 inches
c c




Resistance in a circuit is measured by a ______? - answer-Ohm Meter
c c c c c c c c c c c




The voltage reading across a closed switch of an energized (120v) circuit should be? -
c c c c c c c c c c c c c c


answer-Zero Volts
c c




The total resistance of a series circuit that contains of two 10 ohms load is? - answer-20
c c c c c c c c c c c c c c c c


ohms
c




The total resistance of a parallel circuit that consists of 10 ohms load and a 5 ohms load
c c c c c c c c c c c c c c c c c


is? - answer-3.3 ohms
c c c c




In a circuit the higher the resistance the lower the circuit flows? - answer-True
c c c c c c c c c c c c c




An ampere is a unit for measure of? - answer-Electrical current
c c c c c c c c c c




Transformers that produce a secondary voltage that is higher than the line voltage is
c c c c c c c c c c c c c


called? - answer-Step up
c c c c




When testing a capacitor the first thing a technician should do is? - answer-Make sure
c c c c c c c c c c c c c c


power is off
c c c




Ten horsepower of mechanical power is equal to_____ watts of electrical power? -
c c c c c c c c c c c c


answer-7500
c




Transformers that produce a secondary voltage that is lower than the primary voltage is
c c c c c c c c c c c c c


called? - answer-Step down
c c c c




The negative charge in an electric atom is called? - answer-Electron
c c c c c c c c c c




What is potential difference also called? - answer-Voltage
c c c c c c c




What is the kilowatt out put of an electric heater that has 120v supply and draws 30
c c c c c c c c c c c c c c c c


amps? - answer-3.60 kW
c c c c