2A652 CDC EOC Practice Quiz
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2A652 CDC EOC Practice Quiz
- 1.The effect of noise depends on the
- A.
Deflection, frequency, and volume
- B.
Frequency, volume, and duration of exposure
- C.
Deflection, volume, and duration of exposure
- D.
Deflection, frequency, and duration of exposure
- 2.How many valence electrons are needed to make a good conductor?
- A.
3
- B.
4
- C.
5
- D.
6
- 3.After shutdown a motor continues turning; this is known as
- A.
Inertia
- B.
Impedance
- C.
Inductance
- 4.What component on the New Generation Heater activates the heater control unit(HCU)?
- A.
Heater Control Switch
- B.
Burner Control Switch
- C.
Thermostatic Sensor
- D.
Oil Pressure Switch
- 5.Diagonal cutting pliers are designed to cut
- A.
Bolts
- B.
Rivets
- C.
Small wire
- D.
Hard steel
- 6.“The flow or drift of electrons through a conductor” in the same direction at the same time is the definition of
- A.
Conductivity
- B.
Voltage
- C.
Current
- D.
Valence
- 7.The first step of troubleshooting heating equipment is
- A.
Isolation
- B.
Analysis
- C.
Verification
- D.
Recognition
- 8.Given a voltage of 24 volts and a resistance of 18 ohms in a series circuit, the current through the resistor would be
- A.
.075 amps
- B.
1.33 amps
- C.
133 amps
- D.
750 amps
- 9.The stator windings of a synchronous motor are wound
- A.
20 degrees apart
- B.
30 degrees apart
- C.
90 degrees apart
- D.
120 degrees apart
- 10.“Dielectric” is the term used for
- A.
Conductors
- B.
Insulators
- C.
Doped atoms
- D.
Semi-conductors
- 11.Torque is defined as
- A.
Horsepower
- B.
Wattage
- C.
Rotational force
- D.
Opposition to applied voltage
- 12.The area around a magnet where its influence can be felt is the definition of the
- A.
Saturation principle
- B.
Magnetic theory
- C.
Magnetic field
- D.
Law of attraction and repulsion
- 13.The size of a screwdriver is determined by the shank
- A.
Width
- B.
Temper
- C.
Weight
- D.
Length
- 14.If you need to find out how to perform any maintenance required during an inspection, you should refer to the
- A.
PE workcards
- B.
-1 TO
- C.
Methods and procedures TO
- D.
Service inspection workcards
- 15.What component on the MA-3D air conditioner allows the operator to control the overall volume of air leaving the unit?
- A.
Blower control switch
- B.
Airflow control switch
- C.
Evaporator control switch
- D.
Temperature control switch
- 16.Which component is one of the major causes of failure in the DC motor?
- A.
Rotor
- B.
Slip ring
- C.
Commutator
- D.
Bearings
- 17.Which part of the torque wrench scale is normally not used?
- A.
Lower 10%
- B.
Upper 10%
- C.
Lower 20%
- D.
Upper 20%
- 18.The primary function of a nut is to
- A.
Transmit the full design load to the adjoined member
- B.
Provide an auxiliary locking or safety device
- C.
Prevent vibration
- D.
Provide an adjustment mechanism
- 19.When you check the concentricity of a commutator or slips rings, look for
- A.
Wear
- B.
Roundness
- C.
Pitting
- D.
Overheating
- 20.In a parallel circuit, the total voltage is equal to the
- A.
Voltage across each branch
- B.
Voltage across each resistor
- C.
Sum of the voltage across each branch
- D.
The reciprocal of the voltage across the resistances
- 21.Heat added to a gaseous substance is known as
- A.
Latent heat
- B.
Sensible heat
- C.
Super heat
- D.
Specific heat
- 22.Replacement hardware decisions are based on
- A.
Supervisor's preference
- B.
Serviceability criteria
- C.
Availability
- D.
Cost
- 23.What is the total current in a series-parallel circuit that has a total voltage or 48 volts, a series current of 6 amps, one branch current of 2A, and the other branch resistance of 3 ohms?
- A.
3A
- B.
6A
- C.
8A
- D.
12A
- 24.The magnetism that remains after the magnetizing force has been removed is known as
- A.
Residual magnetism
- B.
Permeability
- C.
Molecular magnetism
- D.
Electromagnetism
- 25.If you must push a wrench rather than pull it, how should you do it?
- A.
Use the base of your palm and hold your hand open
- B.
Grip the wrench tightly with both hands
- C.
Grasp the handle near the socket
- D.
Grip the wrench tightly near the center
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