COREN Engineering Practice Examination — Registered Engineering Technician (Nigeria)

Under which of the following legislative acts was the Council for the Regulation of Engineering in Nigeria (COREN) first established?

• ADecree No. 55 of 1970
• BEngineers (Registration, etc.) Act of 1990
• CDecree No. 27 of 1992
• DCOREN Amendment Act of 2018

What is the primary role of the Engineering Regulations Monitoring (ERM) department of COREN?

• AConducting the academic examinations for students in technical colleges
• BFunding infrastructure projects in rural Nigerian communities
• CMonitoring and enforcing compliance with engineering standards and registration requireme…
• DRegistering engineering contractors with the Corporate Affairs Commission

Which of the following professional cadres represents the correct hierarchy (from lowest to highest) under the COREN regulatory framework?

• ACraftsman, Technician, Technologist, Engineer
• BTechnician, Craftsman, Engineer, Technologist
• CCraftsman, Technologist, Technician, Engineer
• DTechnician, Craftsman, Technologist, Engineer

What is the minimum educational qualification required to register as a Registered Engineering Technician (RET) with COREN?

• ANational Diploma (ND) in Engineering or equivalent from an accredited institution
• BHigher National Diploma (HND) in Engineering or equivalent
• CBachelor of Engineering (B.Eng.) or equivalent from an accredited university
• DNational Technical Certificate (NTC) or Trade Test Grade I

How many years of post-qualification practical experience under the supervision of a registered engineer or technologist are required for a National Diploma (ND) holder to apply for registration as a COREN Engineering Technician?

• A1 year
• B2 years
• C3 years
• D5 years

Which professional body is specifically dedicated to representing and promoting the interests of engineering technicians in Nigeria, working in alignment with COREN guidelines?

• ANigerian Society of Engineers (NSE)
• BNigerian Society of Engineering Technicians (NISET)
• CNational Association of Technologists in Engineering (NATE)
• DNigerian Association of Engineering Craftsmen (NAEC)

Under the COREN (Amendment) Act of 2018, which of the following powers was explicitly granted to COREN to curb collapsed buildings and failed engineering works?

• APower to unilaterally award government construction contracts
• BPower to prosecute unregistered persons and companies executing engineering works
• CPower to issue building permits instead of the state development control agencies
• DPower to import construction materials duty-free

What is the primary function of the Nigerian Electricity Management Services Agency (NEMSA) regarding electrical installations?

• AGenerating electricity for the national grid
• BEnforcing technical standards, inspection, testing, and certification of all electrical i…
• CDistributing electricity bills and collecting revenues from customers
• DManaging the pension funds of electricity workers

According to the Nigerian Factory Act, which of the following must be provided for all workers operating in workshops where flying particles or chemical splashes are a risk?

• AHard hats with chin straps
• BHigh-visibility reflective vests
• CAppropriate eye protection (safety goggles or face shields)
• DSoundproofing ear muffs

Which class of fire involves flammable liquids such as petrol, diesel, oils, or paints, and which extinguisher is appropriate for it?

• AClass A fire; water extinguisher
• BClass B fire; carbon dioxide (CO2) or dry powder extinguisher
• CClass C fire; wet chemical extinguisher
• DClass D fire; foam extinguisher

Which class of fire involves live electrical equipment, and which extinguisher should NEVER be used to fight it?

• AClass C (or electrical class); water-based extinguisher
• BClass B; carbon dioxide (CO2) extinguisher
• CClass A; dry powder extinguisher
• DClass K; clean agent extinguisher

What is the correct immediate action to take if a colleague suffers from an electric shock and is still in contact with the live conductor?

• APull the colleague away with your bare hands immediately
• BSafely isolate the power source or use a non-conductive object (like dry wood) to separat…
• CThrow water on the colleague to extinguish any potential sparks
• DRun to call for an ambulance before doing anything else

In a manufacturing plant, what does a safety sign with a red circular band, a diagonal crossbar, and a black symbol on a white background represent?

• AA mandatory action sign
• BA warning sign
• CA prohibition sign
• DAn emergency exit sign

What is the purpose of a Permit to Work (PTW) system in engineering maintenance operations?

• ATo authorize a technician to travel between different sites in Nigeria
• BTo provide a formal, written safety control system to prevent accidents during high-risk…
• CTo request additional tools and materials from the storekeeper
• DTo claim overtime allowance after completing a shift

According to the Nigerian National Environmental Standards and Regulations Enforcement Agency (NESREA) guidelines, how should hazardous industrial liquid wastes be managed?

• ADischarged directly into nearby public drains to prevent workshop accumulation
• BCollected in labeled containers, treated to meet regulatory standards, and disposed of vi…
• CBuried in unlined shallow pits within the factory premises
• DMixed with household municipal waste to dilute the toxicity

What does the term 'LOTO' stand for in industrial safety, and what is its primary purpose?

• ALoad-On, Take-Off; to balance phase loading in transformers
• BLog-Out, Time-Out; to track contractor hours on site
• CLockout-Tagout; to ensure machinery remains de-energized during maintenance
• DLine-Output, Terminal-Option; a communication protocol

Which of the following is a mandatory requirement under NEMSA regulations before a newly installed industrial distribution board is energized?

• AConducting an insulation resistance test and obtaining a signed inspection certificate
• BPainting the board in safety yellow
• COperating it at double its rated voltage for 24 hours
• DSubmitting a list of all connected appliances to the local DisCo

In the context of engineering ethics, what is a technician's obligation if they detect a design flaw that poses an immediate public hazard on a project they are supervising?

• AIgnore it, as design responsibility lies solely with the registered engineer
• BInform the site supervisor and formally report the issue to the supervising engineer/auth…
• CRedraw the plans themselves and execute the changes without telling anyone
• DWait until the project is completed before bringing it up

Under the Nigerian Factory Act, who is legally responsible for providing Personal Protective Equipment (PPE) to employees in a registered workshop?

• AThe employee must purchase their own PPE
• BThe labor union representing the workers
• CThe employer (occupier of the factory)
• DThe federal ministry of labor through annual allocations

What is the significance of the 'NIS' mark on engineering tools and safety equipment in Nigeria?

• AIt indicates the item was manufactured in Northern Nigeria
• BIt indicates that the product complies with the safety and quality standards set by the S…
• CIt guarantees the tool has a lifetime warranty
• DIt indicates that the tool is exempted from import duties

In a workshop, what color is typically used to represent 'Caution' or 'Warning of hazard' in safety signs (e.g., warning against slippery floors)?

• ARed
• BGreen
• CBlue
• DYellow

What is the main purpose of 'earthing' (grounding) the metallic enclosure of an electrical machine?

• ATo increase the voltage output of the machine
• BTo provide a low-resistance path for fault currents to flow to the earth, triggering prot…
• CTo reduce the electromagnetic interference of the motor
• DTo save electricity by recycling unused current

In case of a minor cut on a worker's hand in the workshop, which first aid step should be taken first after putting on clean gloves?

• AApply a tourniquet above the elbow
• BWash the wound gently with clean water and mild soap or antiseptic, then apply a sterile…
• CPour engine oil on the wound to stop the bleeding
• DLeave the wound open to the air to dry out

Which of the following is considered an unsafe practice when using a portable step ladder in a workshop?

• AStanding on the top step or cap of the ladder
• BMaintaining three points of contact while climbing
• CPlacing the ladder on a flat, stable surface
• DChecking the ladder for damage before use

Which of the following documents is used to record and detail all hazards, their risks, and the corresponding control measures for a specific site activity before work begins?

• ABill of Engineering Measurement and Evaluation (BEME)
• BJob Safety Analysis (JSA) / Risk Assessment
• CCOREN Logbook
• DMaintenance Schedule

In orthographic projection, what is the primary difference between first-angle projection and third-angle projection?

• AIn first-angle, the object is placed between the observer and the projection plane; in th…
• BFirst-angle is only used for isometric drawings, while third-angle is used for perspectiv…
• CIn first-angle, the left-side view is drawn on the left side of the front view; in third-…
• DFirst-angle uses a horizontal projection plane only, while third-angle uses vertical plan…

Which type of line in an engineering drawing is represented by a thin, dashed line consisting of alternating long and short dashes?

• AHidden line
• BCenter line
• CDimension line
• DSection line

What is the purpose of sectioning in an engineering drawing?

• ATo show the external texture of the drawing sheet
• BTo reveal the internal details and features of a complex object by virtual cutting
• CTo divide the drawing into different sheets for printing
• DTo indicate the color scheme of the final product

If a drawing has a scale of 1:5, what does this indicate about the drawing's dimensions relative to the actual object?

• AThe drawing is 5 times larger than the actual object
• BThe actual object is 5 times larger than the drawing
• CThe drawing is 5 units long and the actual object is 1 unit long
• DThe scale represents a perspective drawing from 5 meters away

What does the symbol of two concentric circles next to a truncated cone represent in the title block of an engineering drawing?

• AThe surface roughness profile
• BThe orthographic projection method (first or third angle)
• CThe manufacturing tolerance class
• DThe scale indicator

Which of the following line types is drawn thick and solid in a standard engineering drawing?

• ADimension line
• BExtension line
• CVisible (or outline) line
• DCenter line

In engineering drawings, what is the purpose of an 'extension line'?

• ATo extend the drawing sheet for larger designs
• BTo project from the outline of the object to indicate the limits of a dimension line
• CTo show where a component can be extended physically during operation
• DTo indicate a line of symmetry

What does the term 'tolerance' refer to in engineering drawings and manufacturing?

• AThe ability of a material to withstand corrosive environments
• BThe total allowable variation in a dimension
• CThe maximum force a component can bear before breaking
• DThe color variance of the painted surfaces

Which projection system draws an object using three axes, where the angles between any two axes are 120 degrees?

• AIsometric projection
• BOblique projection
• CPerspective projection
• DOrthographic projection

What does a hatch pattern drawn at 45 degrees relative to the main outlines indicate on a drawing?

• AA surface that requires machining
• BA sectioned surface where material has been virtually cut
• CA hidden pocket or cavity
• DA weld joint location

What does the abbreviation 'GD&T' stand for in modern engineering design?

• AGraphic Design and Tolerancing
• BGeometric Dimensioning and Tolerancing
• CGeneral Drawing and Technicalities
• DGlobal Dimensioning and Testing

In engineering drawing dimensioning, what does a diameter value preceded by the symbol 'Ø' represent?

• AThe radius of a cylinder
• BThe spherical surface finish
• CThe diameter of a cylindrical feature or hole
• DThe phase angle of an electrical wire

Which drawing sheet size is exactly twice the area of an A4 sheet in the ISO standard?

• AA5
• BA3
• CA2
• DA1

What type of view is obtained by projecting an object view onto a plane that is not parallel to any of the principal planes of projection, useful for showing true shapes of inclined surfaces?

• AFront view
• BSection view
• CAuxiliary view
• DDetail view

In a thread specification such as 'M10 x 1.5', what does the '1.5' represent?

• AThe length of the bolt in centimeters
• BThe thread pitch in millimeters
• CThe tensile strength grade
• DThe major diameter of the thread

What is the condition for a coplanar force system acting on a rigid body to be in static equilibrium?

• ASum of forces in x-direction must be zero, and sum of forces in y-direction must be zero
• BSum of forces in x-direction is zero, sum of forces in y-direction is zero, and the sum o…
• CThe sum of moments about any point must equal the net force
• DThe force in the x-direction must equal the force in the y-direction

What does Hooke's Law state in the context of elastic materials?

• AStress is inversely proportional to strain
• BStress is directly proportional to strain within the elastic limit
• CShear force is equal to bending moment
• DStrain is independent of the applied load

How is normal stress (σ) calculated for a member subjected to an axial tensile load?

• ALoad divided by the original cross-sectional area
• BLoad multiplied by the length of the member
• CShear force divided by the volume
• DChange in length divided by the original length