WorksheetsBSESME - HVAC
Total questions: 60
Worksheet time: 30mins
Complete the following statement:
The Health and Safety at Work Act 1974…
shares the responsibility for health and safety between the employer and the local council
places all the responsibilities for health and safety on the employee
places all the responsibilities for health and safety on the employer
shares the responsibility for health and safety between the employer and the employee
Which of the following scenarios describes the work covered by an Electrical Installation Condition Report (EICR)?
Inspecting all electrical appliances used in a building to ensure that they are safe for use
Identifying the electrical circuit and wiring requirement for a specific building
Checking the overall integrity of electrical circuit and wiring in a building
Assessing the energy efficiency of an electric circuit to meet UK Government's sustainability guidelines
Which of these is the first step to take when conducting a risk assessment?
Evaluate the risk
Review your findings
Identify the hazards
Update risk assessments
What is meant by the term 'specific heat capacity' of water?
The amount of energy required to raise the temperature of 1kg of water by 1°C
The amount of energy required for water to reach its boiling point
The amount of energy required for water to reach its saturation point
The amount of time that water takes to reaching boiling point
When refrigerant passes through a condenser in a single-stage vapour compression system, the phase change that the refrigerant undergoes is from...
Superheated Vapour to Saturated Liquid
Saturated Liquid to Superheated Vapour
Dry Saturated Vapour to Superheated Vapour
Wet Vapour to Saturated Liquid
What responsibility is placed on employers under the Management of Health & Safety at Work Regulations 1999?
To outline the minimum welfare provisions that must be provided
To undertake risk assessments and identify potential hazards
To manage the minimum break times that must be given to employees
To ensure that a Principal Designer and Principal Contractor are appointed
When the number of turns in the coil of an AC generator is increased...
the Electromotive Force (EMF) decreases
the Electromotive Force (EMF) increases
the Electromotive Force (EMF) remains the same
the Electromotive Force (EMF) becomes zero
The image shows two rooms with a refrigeration system. Which of the following statements is true?
Room 2 will always be cooler than Room 1
Room 1 will get hotter and Room 2 will get cooler
Room 2 will get hotter and Room 1 will get cooler
Room 1 and Room 2 will have the same temperature
Which of the following do heat pumps use in geothermal energy?
Variable electricity
Constant electricity
Earth’s variable temperature
Earth’s constant temperature
Energy can be preserved in hot water copper pipes through the use of…
pipe heaters
pipe insulation
pipe ducts
pipe boxes
What is a 'Permit to Work'?
A site passport to demonstrate your competency to work on the site
A step-by-step procedure on how to complete a task
A commissioning document to confirm that a system is fully functioning as intended
A system that requires operatives to seek permission before performing high risk tasks
The following risk for maintenance work at height has been identified: Falls from height Which of the following should be your first consideration point?
Is there enough space for scaffolding to be installed?
Is mobile safety steps suitable for the maintenance tasks?
Is it possible to avoid working at height?
Are there any permanent fixtures for you to attach your harness?
You have been instructed to carry out air permeability testing on new build dwellings in London. What is the maximum acceptable air permeability rate per tested dwelling?
10.00m³/(h.m²) @ 50pa
13.00m³/(h.m²) @ 60 pa
14.00m³/(h.m²) @ 70 pa
15.00m³/(h.m²) @ 80 pa
Which of the following is a key output of critical output analysis?
Identification of the critical activities that affect the completion date of the project
A calculation of the value of critical tasks that affect the duration of the project
To estimate the duration of the project and identify the particularly important activities
To identify one or more critical items that will have an effect on the project cost
What is 'reactive maintenance'?
When maintenance work is carried out daily
When maintenance work is carried out based on a risk score to the overall system
When maintenance work is carried out periodically
When maintenance work is only carried out as and when a fault occurs
You are the maintenance engineer for university student accommodation. Maintenance works means that water supply to the building will be down for approximately 8 hours. What must be provided to the student tenants?
A written notice
0.5% rent deduction for the month
Alternative supply of water
A say of when the shut-off would be best
What is the main aim of 'Total Productive Maintenance'?
Reduction in idle time
Zero downtime
Rise in output
None of the above
When should you perform proportional balancing to a ventilation system?
1. After initial installation
2. When there has been an alteration to the building layout
3. When there is a heatwave
4. When there has been a change to the ventilation system
1, 2, 3
1, 2 & 4
2, 3 & 4
1, 3 & 4
Why should the ventilation system serving an office area provide sufficient air changes?
To cool the office area
To ensure that the energy usage is optimised
To ensure adequate fresh air is provided to the occupants
To ensure that the cold air drafts are prevented
Which of the following is an objective of a building maintenance schedule?
To bypass mandatory service dates
To maintain assets so they never breakdown
To pay less money for replacement service parts
To reduce reactive maintenance
What is the minimum trap size for above ground drainage for a single stack system?
45mm
55mm
65mm
75mm
You are to improve the efficiency of an air handling unit by installing heat recovery unit. Which unit has the highest heat recovery?
Heat pipe
Thermal wheel
Run-Around coil
Recuperator
During an evaluation of a commercial kitchen's ventilation system, you discover that the system is operating adequately, but the extract duct and canopy filters are clogged with excess cooking oil and dust. What should you do?
Advise the client of the fire risk and agree after work hours to clean the ducts
Issue a non-conformance certificate and close down their kitchen immediately
Report the issue to the Health and Safety Executive
Switch off the kitchens extract fan and advise the client to open windows and doors for ventilation
The Standard Assessment Procedure (SAP) calculation is used to...
assess the energy efficiency of dwellings.
assess the energy efficiency of electrical motors.
assess the energy efficiency of boilers.
assess the energy efficiency of office buildings.
One of ten radiators in a central heated property is not turning on. Which of the following could be possible causes?
1. Trapped Air in the System
2. Sludge/debris build-up in the System
3. Faulty boiler pump
4. faulty boiler
1 & 2
3 &4
1, 3 & 4
1 & 4
You have been asked to look at a gas fired boiler which has developed a sound like whistling or as it is known in industry - 'kettling'. What could be the main reason?
High water pressure
High water velocity
Low water pressure
Low water velocity
What would you adjust to maintain a constant temperature of an air conditioning unit?
Thermometer
Thermostat
Temperature gauge
Stabilizer
What is the energy benefit of using a Mechanical Ventilation with Heat Recovery (MVHR) system?
It uses less electricity than other ventilation system
All the air is extracted internally and released back into the room after cleansing
Heat from extracted air is retained and transferred to incoming fresh air
It is a self-powered system that turns stale air into renewable energy that powers the motor
What is the maximum specific fan power (SFP) for a central balanced mechanical ventilation system with heating and cooling in new (non-domestic) buildings?
0.5 (w/(l.s-1))
1.6 (w/(l.s-1))
2.0 (w/(l.s-1))
2.5 (w/(l.s-1))
Following a full inspection of a commercial clients AC Fire Alarm system, what should they be reminded of?
That a live flame should be created to test the smoke detector regularly
That the detectors batteries should be replaced monthly
That smoke detectors should be cleaned regularly using cleaning sprays
That the next mandatory inspection date is 6 months from that day
How should you record any areas of non-conformances found after completing testing of plant?
Non-conformances should be recorded on the testing certification and issued in line with agreed procedures
Non-conformances should be sent in an email to the client and your line manager
Make a note of the test results in your diary and remember to verbally inform the client at the end of day
You only need to provide test results; non-conformances do not need to be recorded
Which of the following is not one of your responsibilities as an employee under The Health and Safety at Work Act (HASAWA) 1974?
To abide by your company's Health and Safety Policy
To report any health and safety issues to others
To only use equipment for tasks that they have been designed for
To provide and pay for your own PPE
You are to attend a new client factory site to carry out maintenance work. What is the client required to do prior to you starting work on their premise?
Provide you with PPE
Give you an induction
Notify the Health and Safety Executive (HSE)
Stop all site operations
Which of the following activities does not require a Control of Hazardous Substances Hazardous to Health (COSHH) assessment?
Replacing a fuse on a plug
Removing plasterboard
Cleaning a cold water tank
Taking down suspended ceiling panels
As part of a risk assessment, you have been assigned to carry out a temperature check on a domestic hot water system. What should the flow water temperature at the inlet to the thermostatic mixing valves (TMVs) for wash hand basins be?
At least 50 °C within one minute of running the water
At least 50 °C within three minutes of running the water
At least 60 °C within two minutes of running the water
At least 60 °C within three minutes of running the water.
A boiler house's fresh air inlet has been obstructed, resulting in insufficient air reaching the gas-fired boiler. Which of the following effects on the boiler is most likely?
‘Kettling’
A reduction in flow rate
Leaks
Insufficient combustion
A room is heated using a low-temperature hot water heating system with radiators. What is the primary form of heat transfer from the radiators to the room?
Conduction
Convection
Radiation
Validation
What is a short circuit?
When there are too many resistors on an electrical circuit causing an insufficient electrical supply
When an electric current flows through an unintended or undesirable path with little to no resistance
When there is a drop in voltage from an electrical power supply system causing a power outage
When an electrical circuit has the right amount of resistance to control the current flow
Which of the following describes the 'Building Automation System' (BAS)?
An intelligent system that is used to control multiple building services via a single platform
A Computer Aided Design (CAD) system to help design building services automatically
Using the layout of a building to automatically decide on the placement of building services and adjusting specification to suit
Using robotics on site to assist with installation and maintenance of building services
You have been asked to commission a domestic hot water calorifier. What is the recommended minimum temperature setting for the water storage to limit the risk of legionella in the water system?
At least 70 degrees Celsius and dispersed so that the exit temperature reaches 60 degrees Celsius in four minutes
At least 75 degrees Celsius and dispersed so that the exit temperature reaches 60 degrees Celsius in three minutes
At least 60 degrees Celsius and dispersed so that the exit temperature reaches 50 degrees Celsius in one minute
At least 85 degrees Celsius and dispersed so that the exit temperature reaches 65 degrees Celsius in two minutes
Your client has verbally requested you to modify the ducting run for a ventilation system whilst you are carrying out general maintenance on a Air Handling Unit.
How should this work be confirmed prior to you implementing any changes requested?
Request for the work to be confirmed in a written instruction
Text or call your line manager to confirm the work
Make a note of the instruction in your diary
Add the instruction to the list of points to raise at the next site meeting
You have been asked to commission a condensing boiler, to meet project efficiency and reduction of energy wastage. What would be the ideal system return temperature settings?
Between 30 °C and 40 °C for 80% of the annual operating hours
Between 55 °C and 65°C for 40% of the annual operating hours
Between 65 °C and 75 °C for 50% of the annual operating hours
Between 75 °C and 85 °C for 50% of the annual operating hours
. Why is it important that Soil Vent Pipes installed are suitably vented?
So that it provides an outlet for wastewater
So that air can be drawn out of a pipe to create negative air pressure
So that any wastewater overflow has a place to go
So that air can be drawn down a pipe to balance air pressure
Who should be responsible for isolating a system that requires maintenance work?
The owner of the building
The person who is carrying out maintenance work
The risk manager
The on-site janitor
You have been commissioned to upgrade the HVAC system for a school. When would be the most ideal time to carry out this project?
Normal school operating hours
In the evening of school terms
During school holidays
Anytime
A supermarket has taken the approach of 'predictive maintenance'. What does 'predictive maintenance' involve?
Storing extra equipment in a warehouse so that any fault can be rectified immediately
Monitoring equipment performances so that proactive maintenance can be carried out before breakdown
Shutting-off systems from 12am to 6am once a year to carry out all maintenance works
Maintaining equipment on a regular basis to ensure that it is operating at optimal efficiency at all times
An office heating system has broken down and the average temperature is 10°C. Why is it important for you to tell the client if you are not able to repair the heating in the next hour?
So that the staff to be sent home, because the legal minimum office temperature during working hours in the office is 13°C
So that the staff to be sent home because the legal minimum office temperature during working hours in the office is 16°C
So that the client can seek alternative methods of heating or tell their staff to go home
So that their staff can be informed to bring their own heaters to the office
Which of the following is a disadvantage of a preventative maintenance plan?
Less energy wastage
Longer equipment and building life
Expensive upfront cost
Less disruptions
Who can issue Gas Safety Records?
A Gas Safe registered engineer
A CORGI registered engineer (Council for Registered Gas Installers)
A Chartered Engineer of CIBSE (Chartered Institute of Building Service Engineer)
An ARB registered Architect (Architects Registration Board)
Your client has recently bought an old warehouse that was built in the 1940s. During a routine maintenance check you noticed that the waterpipes are made of lead. What should you tell your client?
Tell them that the pipes have no signs of corrosion so it's safe to drink
Tell them to replace the lead pipes as drinking water from the pipes is harmful
Tell them that it is illegal to have lead pipes in their property and they must be replaced
Tell them that the legal requirement is to replace the pipes within 3 months of occupation
According to the CIBSE Commissioning Code A: 2006, it is recommended that while performing a proportional balance of system, the balanced section of the system be kept at....
between 40% and 65% of true design flow rate.
between 55% and 75% of true design flow rate
between 60% and 85% of true design flow rate
between 70% and 130% of true design flow rate
You have been given the task of installing heating controls for a hose with a floor space of more than 150 square meters. What is the minimum recommended number of heating zones and timers (as per Part L 2010 of the Building Regulations)?
1 heating zone with 1 timer
1 heating zone with 2 timers
2 heating zones with 2 timers
3 heating zones with 1 timer
What type of transformer is being used when the secondary voltage is larger than the primary voltage?
Positive transformer
Step-up transformer
Negative transformer
Step-down transformer
You have been tasked with investigating a chiller unit that has no or insufficient cooling. What could be the reason behind this?
Evaporator iced up
Coolant fluid unsuitable for temperature requirements
Improper or fluctuating line voltage
All of the above
. What could cause an a/c coil to freeze?
Dirty air filters
Broken fans
Blocked condensate line
All of the above
Your client has commented that doors are slamming shut by themselves when the air conditioning unit is turned on.- What should you do?
Adjust the balancing dampers to regulate the airflow
Adjust the control dampers to increase the air pressure
Add a door stopper to prevent doors closing by itself
Turn down the air conditioning unit
What is the purpose of the Time Delay control feature in a lighting system with occupancy sensing?
To prevent lights turning on and off when people go in and out of a room
To act as a backup system to control the lights in case the occupancy sensors are damaged
To give the lighting system time to adjust the brightness depending on the occupancy level
To control how long a person should be using a room for
Which of the following is an advantage of using renewable resources?
They are cheap
They release little greenhouse gas
They are highly profitable
They are constantly available
You have been asked by your client to select a suitable sustainable heat source to heat his factory which is located outside the town near the main road.
Which of the following heating systems will you recommend?
Hydro energy
Tidal energy
Gas-fired condensing boiler
Biomass boiler
After carrying out a service on a boiler, what information should be left on it?
A copy of your business card
The full service record
A parts list for the boiler
A Gas Boiler Service Sticker with date of service
