2A652 CDC EOC Practice Quiz

172 Questions | By Catherinehalcomb | Updated: Mar 20, 2022 | Attempts: 2728

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2A652 CDC EOC Practice Quiz

Questions and Answers

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