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17 Cards in this Set
- Front
- Back
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Where do you find the insulation ratings of conductors for motors? |
Table 37 and Rule 28-104 (1) |
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You are installing a motor starter in a location where the ambient temp. Is 30 degrees C higher than the location where the motor is installed. What overload device type do you use? |
Magnetic |
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Where in the Code, do you look for minimum number of overload devices? |
Table 25 |
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The capacitor in a capacitor start motor is used for what? |
Improving torque |
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Where do you find the amps for a 3 phase squirrel cage induction motor? |
Table 44 |
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How do you find out the maximum size of time or non-time delay fuses? |
Rule 28-200 and tables 29 and 44 will get you there. |
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A resistor connected to the slip rings shorts out on a wound rotor motor that is running at full speed. What will happen to the motor? |
Motor will run like an induction motor |
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Which condition would cause a motor to burn out? |
Reduction of line frequency |
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How is dynamic breaking achieved for a DC SHUNT MOTOR? |
Shorting the SHUNT field windings |
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When can a rough in inspection by the inspection department be done on the electrical installation in a single dwelling? |
After roof and windows are installed |
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What is this symbol? |
Thermostat |
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What is the impedance of coaxial cable? |
30 ohms |
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Why must proper polarity be observed when connecting signal devices for a fire alarm system? |
Signal devices are supervised |
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A communication Jack may not be installed in what location? |
Bathroom. Refer to rule 60 - 400 - 2 |
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What is the function of a triac lamp dimmer? |
It varies the voltage cycle across each lamp |
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Where would you find the Ft ratings in the code book? |
Page 406. Appendix B. Rule 2-130 |
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What page will you fine a diagram on everything motors? |
Page 467 |
