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17 Cards in this Set
- Front
- Back
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One ampere equals? |
????B |
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What is equivalent to 35 micro amps |
.000035 amperes |
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What happens when you multiply a negative number times a negative number |
The result is a positive number |
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How should voltmeters be used to take measurements in a circuit? |
Connected in parallel across the load with no lead of the load to be measured disconnected |
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What is the same in all parts of a series circuit |
Current |
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What is the same across all branches of a parallel circuit |
Voltage |
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The movable portion of a relay is referred to as?? |
Armature |
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This type of resistor is often found in door operators where it can be used to control door speed. |
Wire wound adjustable resistor |
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When hoisting a motor generator, what should you use to stabilize the load to prevent it from spinning |
Hoisting Jack |
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If hoist ropes slip 1%, how much slippage would be in a 120 ft run |
1 7/16" |
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A frequently used rule of thumb is that the stopping distance should be about 6 in for each ____ feet per minute |
25 ft per minute |
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A three phase, full wave power supply uses how many rectifiers |
6 |
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A motor drive that utilizes a compound wound generator and a shunt wound motor is a |
Ward Leonard drive |
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What actuates the PM switch |
Vane or fin |
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Synchronous selectors may be driven by which method |
Aircraft cable |
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Which are the largest wires on a DC traction elevator |
The wires to the main driving motor armature |
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What type of freight door has two different panel sizes to accommodate a shallow pit |
Compound door |
