# Liquid Fuels Volume 2

30 Questions | Total Attempts: 62  Settings  Liquid Fuels Volume 2 CerTest

• 1.
A magnet that is magnetized by induction from an external source is called?
• A.

External Magnet

• B.

An artifical magnet

• C.

U magnet

• D.

Internal Magnet

• 2.
What best descibes a schematic diagram?
• A.

Called a one line diagram, not usefull for trouble shooting

• B.

Called a one line diagram, very usefull for trouble shooting

• C.

Called a 2 line diagram, not usefull for troubleshooting

• D.

Called a 2 line diagram, very useful for trouble shooting

• 3.
How much current flow is in a circuit with 24 volts applied and with 72 OHMS resistance
• A.

.3 ampers

• B.

.33 ampers

• C.

.02 ampers

• D.

.22 ampers

• 4.
The joint resistance of a parallel circuit is equal to the applied voltage divided by what
• A.

Voltage

• B.

Resistance

• C.

Total Current

• D.

Conductivity

• 5.
How is the measurement of the apparent power an of AC electrical system expressed
• A.

Amperes

• B.

OHMS

• C.

• D.

Kilovolt-amperes

• 6.
What unit of measurement is used when calculating the inductance of a coil
• A.

Henry

• B.

• C.

Kilovolts

• D.

Amps

• 7.
A 110-volt AC motor reads 20 inline amperes, and the inline voltmeter shows only 1,936 being consumed, what is the power factor of the AC Circuit
• A.

70% pf

• B.

78% pf

• C.

80% pf

• D.

88% pf

• 8.
What type of generator has bushings riding ont he commutator to carry the current to a external circuit
• A.

AC Type

• B.

DC type

• C.

AC/DC Type

• D.

All the above

• 9.
What is the open circuit voltage of a lead- acid storage battery
• A.

.2 volts

• B.

2 volts

• C.

2.2 volts

• D.

2.22 volts

• 10.
What is the primary voltage of a transformer that has a secondary voltage of 240 volts and is rated 1-3 turn ratio
• A.

70 volts

• B.

75 volts

• C.

80 volts

• D.

85 volts

• 11.
What item is not a part of a DC motor
• A.

Bushings

• B.

External windings

• C.

Stator

• D.

Throttle bushing

• 12.
The magnetic feild of a 3 phase motor rotor is caused by
• A.

Current flow in the rotor

• B.

Resistance in the rotor

• C.

Current flow on the stator

• D.

Resistance to the stator

• 13.
In what way does a DC Shunt motor have the feild coils and armature connected
• A.

In series

• B.

In parrallel

• C.

Opposite

• D.

Together

• 14.
What is the power in watts consumed by a circuit with 120 volots applied and a resistance of 12 ohms
• A.

12 watts

• B.

120 watts

• C.

1,200 watts

• D.

12,000 watts

• 15.
What should you connect and how, to operate a single phase dual voltage motor on high voltage
• A.

Run windings in parrallel

• B.

Run windings in series

• C.

Stator in parrallel

• D.

Stator in series

• 16.
The squirrel- cage winding has inductive reactance and is placed beneath what
• A.

The stator

• B.

The Bushings

• C.

The wound rotor section

• D.

The voltage supply

• 17.
What motor requires some starting
• A.

Single phase DC motor

• B.

Dual phase DC motor

• C.

Single phase AC motor

• D.

Dual phase AC motor

• 18.
What are the characteristics of a 3 phase motor
• A.

Single voltage

• B.

Dual voltage

• C.

Thriple voltage

• D.

Either single or dual voltage motors

• 19.
An indication of an open rotor in a squirrel cage motor is?
• A.

Excessive heat

• B.

Loud noise

• C.

• D.

All the above

• 20.
The internal windings of all 3 phase motors are
• A.

Wye connected

• B.

Delta connected

• C.

Either wye or delta connected

• D.

None of the above

• 21.
Kirchoff's voltage law states that
• A.

The sum of voltages around a close loop must equal applied voltage

• B.

The sum of voltages around a open loop must equal applied voltage

• C.

The sum of voltages around a closed loop must equal zero

• D.

The sum of voltages around a open loop must equal zero

• 22.
What completes an electrical cycle of an AC generator
• A.

1 positive and 1 negative alteration

• B.

2 postive and 1 negative alteration

• C.

1 positive and 2 negative alteration

• D.

2 positive and 2 negative alteration

• 23.
The end play of a motor should not exceed what?
• A.

1 inch

• B.

3/4 inch

• C.

1/10 inch

• D.

1/64 inch

• 24.
The method used to open the contacts on a across the line magnetic controller are?
• A.

Flipping the breaker

• B.

Spring tension and gravity

• C.

With a screwdriver

• D.

Applied voltage

• 25.
The device used in most magnetic across the line motor controllers to reduce chater is
• A.

Flexible coupling

• B.

Non spark throttle bushings

• C. Back to top