FRCC 104 Final Exam Review | Questions & Answers (100 %Score) Latest Updated
2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
Mica and disc capacitors are used on: - Electronic circuit boards
What is the most common temperature sensing element used for mechanical thermostats? - Bimetal
Coil
Line voltage thermostats can usually switch: - 15 A
Semi-conductors are primarily used in: - Control Circuits
The different colors used on resistors represents: - Numbers
Dual element Fuse description - Provides a time delay for starting motor loads
When a line-duty overload protecting a heater detects an overload it: - Breaks the line voltage to the
heater
Why are manufacturers replacing relay logic systems with solid-state logic systems? - Solid-state logic
systems operate faster, use less power, and can control more functions.
The purpose of a standard control transformer is to: - Reduce line voltage to 24 V for HVACR control
systems.
The fourth color band represents: - The resistor tolerance
Two common pressure-sensing devices used in pressure controls are: - The bellows and the diaphragm.
Overloads are designed to protect against: - Excessive current
, The thermostats on most residential air-conditioning systems are: - low-voltage thermostats
A fuse protects an electrical circuit by: - Melting when excessive current flows through it, opening the
circuit.
This electrical component allows current to flow in only one direction and operates similar to a check
valve. - Diode
A triac can be described as: - Two silicon-controlled rectifiers (SCR) in parallel.
Which type of thermostats provide the closest temperature control? - Electronic low-voltage
thermostats
The first two color bands represent: - the first two digits of the resistor value
An electrical component that stores energy when an electric charge is forced onto its plates is called a: -
capacitor
When the third color band is silver, it represents: - The multiplier for the resistor value
How does a remote bulb thermostat work? - The metal in the bulb expands and contracts with
temperature changes.
A protective device that prevents the operation of a unit when there is inadequate fluid flow is called a:
- Sail Switch
What is the most common form of switching used for mechanical thermostats? - mercury bulb
What is the common sensing element used in an electronic thermostat? - thermistor
Compared to motor capacitors, paper and film capacitors are: - Smaller in rating and physical size
2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
Mica and disc capacitors are used on: - Electronic circuit boards
What is the most common temperature sensing element used for mechanical thermostats? - Bimetal
Coil
Line voltage thermostats can usually switch: - 15 A
Semi-conductors are primarily used in: - Control Circuits
The different colors used on resistors represents: - Numbers
Dual element Fuse description - Provides a time delay for starting motor loads
When a line-duty overload protecting a heater detects an overload it: - Breaks the line voltage to the
heater
Why are manufacturers replacing relay logic systems with solid-state logic systems? - Solid-state logic
systems operate faster, use less power, and can control more functions.
The purpose of a standard control transformer is to: - Reduce line voltage to 24 V for HVACR control
systems.
The fourth color band represents: - The resistor tolerance
Two common pressure-sensing devices used in pressure controls are: - The bellows and the diaphragm.
Overloads are designed to protect against: - Excessive current
, The thermostats on most residential air-conditioning systems are: - low-voltage thermostats
A fuse protects an electrical circuit by: - Melting when excessive current flows through it, opening the
circuit.
This electrical component allows current to flow in only one direction and operates similar to a check
valve. - Diode
A triac can be described as: - Two silicon-controlled rectifiers (SCR) in parallel.
Which type of thermostats provide the closest temperature control? - Electronic low-voltage
thermostats
The first two color bands represent: - the first two digits of the resistor value
An electrical component that stores energy when an electric charge is forced onto its plates is called a: -
capacitor
When the third color band is silver, it represents: - The multiplier for the resistor value
How does a remote bulb thermostat work? - The metal in the bulb expands and contracts with
temperature changes.
A protective device that prevents the operation of a unit when there is inadequate fluid flow is called a:
- Sail Switch
What is the most common form of switching used for mechanical thermostats? - mercury bulb
What is the common sensing element used in an electronic thermostat? - thermistor
Compared to motor capacitors, paper and film capacitors are: - Smaller in rating and physical size
