1.
The preferred Air Force base distribution system is
2.
A substation with one incoming transmission circuit and three outoging distribution circuits has (at least) how many lighting arresters?
3.
Which item supplies control voltage to operate circuit Breakers?
4.
What is the configuration of an induction-voltage regulator's primary and secondary windings?
A. 
The primary is in series and the secondary is in shunt
B. 
The primary is in shunt and the secondary is in series
5.
In regards to the circuit, how are a step-voltage regulators's primary and secondary windings configured?
A. 
Primary is in series and the secondary is in series
B. 
Primary is in parallel and the secondary is in series
6.
When can the secondary of a current transformer be opened?
A. 
When the secondary is deenergized
B. 
When the primary is deenergized
7.
Which is not a major fuunction of an oil circuit breaker?
A. 
To minimize damage to a system by opening the circuit when an overload occurs
B. 
To stabalize current flow during an overload situation
8.
What oil circuit breaker components supply amperage to the protective relays?
9.
What percent of electrical system faults are temporary?
10.
Of these devices, which does not interrupt a fault current?
11.
Air-break switches can be used to break a circuit "under load" if they have
12.
Why is the arc extinguisheed so quickly in a vacuum recloser?
A. 
The oil absorbs the fault current
B. 
There is very little oxygen to burn
13.
The insulating quality of sulfur hexafluoride (SF6), at 0 PSI, is how much greater than dry air?
14.
A high-voltage switch is connected to the distribution system that is to protect in
15.
What is usually installed with an oil circuit breaker to allow for equipment maintenence, letting you keep the circuit in operation?
A. 
Fused cutouts and a backup oil circuit recloser
B. 
Knife blades and a normally open air-break switch
16.
Oil breaker contacts that are discolore by excessive heat should be
17.
Dielectrically check the oil in oil circuit breakers
18.
Which of theses acids mixed with water is an effective solution for cleaning insulators and bushings?
19.
What do you use to clean the arc interrupters of an air-break switch?
A. 
B. 
Lint free cloth or round file
20.
Clean a modern air switch that has been closed for a long time by
A. 
Using a clean cloth and wire brush
B. 
Opening and Closing the switch several times
21.
Battery bank maintenence is normally done
22.
What do we use to test a battery cell for its specific gravity?
23.
What must you do if you add water to a battery in freezing temperatures?
A. 
Mix the solution with a stainless steel rod
B. 
24.
The dielectric test voltage for a realy that is rated at 600 volts is
25.
After a wiring change to a control device, check substaion circuits for