Block 2 exam questions

Question 1

Best reading you can get with a meggar

Answer 1

OL

Question 2

Higher Voltage affects current leakage in what way

Answer 2

Higher Leakage

Question 3

What must be done if a control system for a registered boiler is going to be upgraded to a different system

Answer 3

The new control system must be approved by the provincial safety manager

Question 4

What is a negative result of using too much excess air to lower the CO levels in the products of combusion

Answer 4

Reduced efficiency and increased NOx emissions

Question 5

What can be done to the combustion process to lessen NOx production

Answer 5

Add insert gas into the burner

Question 6

What burner component is commonly used to control CO

Answer 6

flame retention heads

Question 7

How does refractory help reduce CO in flue gasses

Answer 7

It promotes higher temperature in the combustion chamber

Question 8

How do vanes operate to control CO

Answer 8

They control the amount of air that enters the burner

Question 9

CO and NOx vary in relation to each other in which way

Answer 9

Inversely

Question 10

How is a ladder logic diagram organized

Answer 10

It is organised in a hierarchical structure

Question 11

WHat is PLC ladder logic used for

Answer 11

To control the operation of industrial machinery

Question 12

What is the purpose of a back pressure regulating valve in an oil supply line

Answer 12

To maintain a constant supply pressure to the fuel metering valves

Question 13

What type of O2 sensor is used for burner applications such as boiler O2 trim systems or bismoass systems

Answer 13

Zirconia

Question 14

What is an important consideration when selecting a gas flow meter

Answer 14

Accuracy

Question 15

How is a seal achieved between the ICI appliances burner and the combustion chamber

Answer 15

A rope or fiber gasket

Question 16

Which of the following documents are required when a program logic controller is used as a burner management system

Answer 16

A list of all error and alarm messages, their meaning and suggested operator actions

Question 17

When replacing the refractory that is integral to the burner, how should the remaining gap between the burner and the castable refractory materials be filler

Answer 17

Using a ceramic fiber insulation

Question 18

Why are flexible connectors recommended on all piping connecting to ICI burners

Answer 18

To reduce stress on the piping system

Question 19

How is a burner supported in an ICI appliance

Answer 19

Most often the burner flange mounting system is enough to support the burner

Question 20

When must product approval process be undertaken

Answer 20

Only for non-certified gas appliances

Question 21

How does a direct-fired kiln operate

Answer 21

It releases hot gases directly inside the kiln

Question 22

Vibration damping mounts are used to reduce the amplitude and frequency of vibrational waves for which of the following

Answer 22

large motors and industrial machines, air heaters and fans, heavy duty HVAC equipment

Question 23

What are the most common types of atmosphere generators used in the heat treating industry

Answer 23

Exothermic and endothermic generators

Question 24

Vibration isolation prevents which of the following

Answer 24

Excessive noise, energy transmission, damage to equipment

Question 25

Ceiling mounted vibration isolation hangers are designed to prevent the transmission of vibration to which structure

Answer 25

Ceiling structure

Question 26

Which type of vibration isolation/damping limited to medium and high speed equipment

Answer 26

Vibration isolation pad mounts

Question 27

Which type of furnace is most often used in an industrial setting

Answer 27

direct-fired furnace

Question 28

What must be done before installing an ICI air heating appliance

Answer 28

Check for any damage that may have occurred during delievery

Question 29

What is the next step after installing appropriate mounting brackets or supports for an ICI air heating appliance

Answer 29

Secure the appliance to the mounting brackets or supports using appropriate hardware

Question 30

What is the purpose of a direct-fired make up air unit

Answer 30

To supply tempered air to replenish exhausted air from a building

Question 31

What is the purpose of seismic restraint for industrial air heating appliances

Answer 31

To prevent damage to the appliance and surrounding are during an earthquake

Question 32

Which type of valve actuator requires jumpers or electrical connection changes for testing

Answer 32

Electo-hydraulic

Question 33

What is the purpose of cycling the valves on some valve train systems with a power engineer or instrumentation technicians assistance

Answer 33

to ensure proper functioning and safety

Question 34

How often should the burner air control damper be checked for fee movement

Answer 34

Weekly

Question 35

How often should the motorised gas valve be checked for proper operation

Answer 35

Weekly

Question 36

What may happen if appliances are found operating contrary to requirements

Answer 36

They may be ordered removed from service by the gas safety officer

Question 37

What is the recommended precaution before starting the burner operation

Answer 37

Ensure jumpers are configured properly

Question 38

How should you verify that ductwork has been installed correctly

Answer 38

Check for any damage, leaks or improper connections, measure and adjust airflow in the exhaust system, inspect and test dampers and louvers

Question 39

WHat is the purpose of inspecting and replacing filters in the system

Answer 39

To provide proper ventilation and exhaust of the combustion by products

Question 40

What should end user training include for complex equipment

Answer 40

Operation overview of the system

Question 41

WHat is the purpose of expanding the individual tubes into the upper and lower drum in the fire tube boiler

Answer 41

To create a pressure tight seal

Question 42

What is lithium bromide considered

Answer 42

Non-toxic

Question 43

WHat should be done during the inspection of the valves

Answer 43

Test safety valves for proper operations

Question 44

When should consumable OEM parts be replaced

Answer 44

Al the recommended intervals suggested by the manufacturer

Question 45

WHat is the latent heat formula is used to calculate

Answer 45

The change in state of a substance

Question 46

How can equipment vibrations be tested firing electric motor testing

Answer 46

Conduct dynamic tests

Question 47

Why should burner parts be replaced during maintance

Answer 47

To prevent malfunction due to deterioration

Question 48

What should you do if acid cleaning is required

Answer 48

Consult with a professional

Question 49

How should you verify the installation of scrubber components

Answer 49

verify the installation and functioning of exhaust fans

Question 50

What should be considered for the installation of an air heating system

Answer 50

Proper supports and flexible connectors for the air and gas piping

Question 51

What is the max flame sensor voltage you can get from a PID controller

Answer 51

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