Liquid Fuels Volume 2

30 Questions | By Streed08 | Updated: Mar 21, 2022 | Attempts: 79

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Liquid Fuels Volume 2 CerTest

Questions and Answers

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.
  
  Farads
- D.
  
  Kilovolt-amperes
6.

What unit of measurement is used when calculating the inductance of a coil
- A.
  
  Henry
- B.
  
  Farad
- 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.
  
  The motor slowing under load
- 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.
  
  Shaded rings
- D.
  
  Stator cover