Generators Flashcards

1
Q

What is basic purpose of a generator?

A

Changes mechanical energy into electrical energy

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2
Q

What determines the amount of voltage being produced?

A

The rotors magnetic field strength
Rotor speed
Number of windings

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3
Q

How long should you run the generator before putting a load on it? And what must you do before turning off?

A

3-5 min and you should make sure all loads are turned off before shutting off the generator

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4
Q

How should you calculate the loads?

A

1 time the resistive loads and 3 times the inductive loads

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5
Q

What will happen when the generator is over loaded

A

The circuit breaker will trip and the generator will continue to run

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6
Q

Where must the circuit protection be from the generator?

A

Outside the gem box
Within 10ft along the wire
And accessible from inside the RV

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7
Q

What controls the magnetic field?

A

The voltage regulator

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8
Q

What controls the generators RPMs

A

The governor

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9
Q

What is the EMS?

A

Energy management system. It automatically removes or sheds loads to keep the generator or shore power from being overloaded

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10
Q

What must you remember when looking to buy a generator for your RV

A

Must be Listed for RV
Weight limits
Compartment size
Load demand

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11
Q

What must you remember when installing the generator

A
  • Must bond it to the frame
  • Must be properly vented
  • The compartment must be properly sealed from the living area
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12
Q

What kind of wire must be used on the generator and what rating?

A

Must use multi strand flexible metal conduit wire that has a minimum 90 degree rating

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13
Q

Where must the exhaust be.

A

Must extend past the outside of the RV.

And can not be connected to the vehicles exhaust

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14
Q

And what must you remember when using the vehicles fuel?

A
  • Yes but must run separate lines to the tank
  • can not draw fuel below 1/4 tank
  • can only pull from one tank
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15
Q

What must a diesel generator?

A

Must have a return line for the fuel

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16
Q

Where is the electrical contact being made on the rotator

A

Through the carbon blocks to the rotator slip rings

17
Q

How do you increase the magnetic force?

A

Increase the electromagnetic field voltage

18
Q

What RPMS does a 2 pole generator run at?

4 pole?

A

3600 for a 2 pull

And 1800 for a 4 pull

19
Q

What is the minimum number of windings a stator can have?

A

Minimum of two

20
Q

What does the start Solenoid do?

A

It’s a relay used to close the circuit between the battery and the starter

21
Q

What might you need to have on the exhaust system

A

You might need a spark arrester in some places

22
Q

What is the acceptable range for hertz?

A

3 hertz above or below 60

23
Q

What is acceptable range for the voltage?

A

Must be within 12 VAC of 120