BREAKING: JAMB Issue Important Update for 2025 Mop-Up Examination (Press Statement)

 

 REPRINT OF EXAMINATION MESSAGES IN CIRCULATION NOT FROM JAMB

We wish to draw the public’s attention to the misleading messages circulating via a spoofed version of our 66019 shortcode. These messages instruct candidates—some of whom have already sat the resit examination and received their results—to reprint examination slips for another examination.

We hereby categorically state that these messages are not from JAMB. There are currently no scheduled examinations, and candidates who have successfully completed the resit examination and received their results need not be concerned. Such messages are fraudulent and intended to sow confusion.

The only examination that JAMB is planning to conduct, which has yet to be scheduled, is the foreign examination held in nine countries across Europe, the Middle East, and certain African nations.

 Additionally, there will be a mop-up examination for candidates who missed the main and resit examinations and have been granted waivers only for 2025 to participate in the usual mop-up for those who experienced biometric failures.

We urge the public to disregard these deceptive messages. Those qualified for the mop-up examination, as specified, will be duly notified once preparations are finalised.

Fabian Benjamin, Ph.D.,

Public Communication Advisor 

JAMB

The Working Principles of Automobile Alternator

An automobile alternator is a device that generates electrical power for a vehicle.

Here's an overview:

Function of Automobile Alternator

- Power Generation: It converts mechanical energy from the engine into electrical energy to power the vehicle's electrical systems and charge the battery.

- Voltage Regulation: It typically outputs 13.5 to 14.5 volts to ensure consistent power supply and battery health.

Components of Automobile Alternator

- Rotor: Rotates with the engine and generates a magnetic field.

- Stator: Surrounds the rotor and produces AC electricity when the rotor spins.

- Rectifier: Converts AC electricity to DC.

- Voltage Regulator: Maintains a consistent voltage level to prevent damage to the electrical system.

How Air Conditioners Really Work – Understanding the 5 Crucial Components:

An air conditioning (AC) system is designed to control temperature, humidity, and air quality. It achieves this through a cycle of heat absorption and release using five main components: the compressor, condenser, thermal expansion valve, evaporator, and fan.

1. Compressor: 

Often called the heart of the AC system, the compressor compresses the low-pressure refrigerant gas into a high-pressure, high-temperature gas. This is essential to circulate the refrigerant through the system.

2. Condenser: 

Located outside the building, the condenser receives the high-pressure gas from the compressor. As air flows over the condenser coils, the refrigerant loses heat and condenses into a high-pressure liquid. This process releases the absorbed heat into the outside air.

3. Thermal Expansion Valve (TXV): 

This small but critical component regulates the amount of refrigerant entering the evaporator. As the high-pressure liquid refrigerant passes through the valve, it expands and cools rapidly, becoming a low-pressure, low-temperature mixture.

4. Evaporator: 

Found inside the indoor unit, the evaporator coil allows the cold refrigerant to absorb heat from the indoor air. A fan blows warm air over the coil, and the refrigerant inside absorbs the heat, cooling the air. As the refrigerant heats up, it evaporates back into a gas.

5. Fan: 

AC systems typically have two fans—one in the indoor unit and one in the outdoor unit. The indoor fan circulates room air across the evaporator coil and back into the room. The outdoor fan blows air over the condenser coil to help expel heat from the refrigerant.

UTME 2025 Rescheduled Examination: How to Re-Print Examination Slip (Step-By-Step)

 

How to Re-Print Examination Slip (Step-By-Step)

Step 1: Visit htteps://www.jamb.gov.ng

Step 2: Click On Print Examination Slip

Step 3: Input Your JAMB Registration Number

If you're shortlisted for the rescheduled examination, your examination slip will be displayed on screen.

Step 4: Print the examination slip immediately 

NB: The examination is slated to hold on the 16th of May, 2025.

UPDATE: JAMB to reschedule 2025 UTME for candidates affected by technical issues in southeast, Lagos

 

The Joint Admissions and Matriculation Board (JAMB) has said it would reschedule 379,997 candidates affected by technical glitches in the five states of the South East and Lagos to retake the Unified Tertiary and Matriculation Examination (UTME).

Registrar of JAMB, Prof. Is-haq Oloyede, made this known in an ongoing press briefing in Abuja on Wednesday.

He said, “206,610 in 65 centres were affected in Lagos and 92 centres in the Owerri zone comprising 173,387 candidates in the five states of the South East were affected.”

Oloyede, who took responsibility for what he described as a “sabotage” of the 2025 UTME, said the affected candidates will start getting text messages from the Board starting Thursday. 

He added, “The affected candidates will start getting text messages for rescheduling starting from tomorrow.

“I apologise, I take full responsibility.”

Of the 1.9 million candidates who sat the UTME, over 1.5 million reportedly scored below 200 out of the maximum 400 marks, raising concerns across the education sector.

More Details shortly…

 

The Engne Psiton (All You Need To Know)

The image illustrates an internal combustion engine (IC engine), a heat engine converting chemical energy into mechanical energy. Here's a breakdown: 

Components:

It shows a cylinder, piston, connecting rod, crankshaft, valves, and spark plug or fuel injector. 

Operation:

The piston moves reciprocally within the cylinder, driven by combustion. This motion is converted to rotary motion by the crankshaft. 

Cycle:

The engine operates in a four-stroke cycle: intake, compression, power, and exhaust. 

Fuel:

IC engines burn fuel internally, using either spark ignition (gasoline) or compression ignition (diesel). 

Applications:

BREAKING: JAMB admits to errors in 2025 UTME Results

 

The Joint Admission and Matriculation Board on Wednesday finally admitted to errors which affected the performance of students during the 2025 Unified Tertiary Matriculation Examination.

The Registrar of the Board, Prof. Ishaq Oloyede admitted to this during an ongoing press briefing in Abuja.

“What should have been a moment of joy has changed due to one or two errors,” Oloyede said.

The UTME is a critical prerequisite for admission into tertiary institutions in Nigeria. It tests candidates in four subjects, including the compulsory Use of English, with the other three drawn from their proposed field of study.

Of the 1.9 million candidates who sat the UTME, over 1.5 million reportedly scored below 200 out of the maximum 400 marks, raising concerns across the education sector.

According to the examination agency, a total of 1,955,069 results were processed, out of which only 4,756 candidates (0.24 per cent) scored 320 and above, considered top-tier performance, while 7,658 candidates (0.39 per cent) scored between 300 and 319, bringing the total for those who scored 300 and above to 12,414 candidates (0.63 per cent). 

Some affected candidates threatened to initiate a lawsuit against JAMB.

Details later…

 

Why is the intake valve larger than the exhaust valve?

1. The intake valve allows the air-fuel mixture to enter the combustion chamber. A larger valve ensures more mixture enters, boosting engine power and efficiency.

2. Exhaust gases are expelled after combustion. Since they’re pushed out by high-pressure forces, a smaller exhaust valve can still handle the job efficiently.

3. Exhaust valves face extreme heat. Smaller size helps manage this heat more effectively and allows room for stronger materials or cooling techniques.

4. Larger intake valves improve volumetric efficiency (how much air the engine can take in), directly impacting performance.

5. Engine designers balance valve sizes for durability, efficiency, and performance, making the intake valve larger is part of this fine-tuning.

In short: A bigger intake valve = better breathing, better power.

UTME 2025 RESULTS: We may review results - Says JAMB (Press Statement)

 

The Joint Admissions and Matriculation Board has announced a review of the 2025 Unified Tertiary Matriculation Examination results following a wave of “unusual complaints” from candidates after the results were released on Friday

RE: PUBLIC COMPLAINT REGARDING THE RELEASE OF THE 2025 UTME

The Joint Admissions and Matriculation Board (JAMB) acknowledges the significant volume of unusual complaints following the release of the 2025 Unified Tertiary Matriculation Examination (UTME) results, which were officially published last Friday. In response, the Board is fast forwarding its annual system review—a comprehensive post-mortem of the examination process that is conducted each year months after the exercise.

The Board’s annual review encompasses three key stages: registration, examination, and result release. During the examination phase, JAMB ensures that every candidate is afforded the opportunity to sit for the test. Should any technical issues arise, the Board reschedules the examination for affected candidates without hesitation.

We are particularly concerned about the unusual complaints originating from a few states within the Federation. We are currently scrutinising these complaints in detail to identify and rectify any potential technical issues. To assist in this process, we have engaged a number of experts, including members from the Computer Professionals Association of Nigeria, Chief External Examiners, who are heads of tertiary institutions, the Educational Assessment and Research Network in Africa, measurement experts, and Vice Chancellors from various institutions. If it is determined that there were indeed glitches, we will implement appropriate remedial measures promptly, as we do in the case of the examinations themselves.

Fabian Benjamin, Ph.D.,

Public Communication Advisor, JAMB

FUEL INJECTOR CLEANING: Guides to Identifying Issues

 

   Fuel injectors play a crucial role in a vehicle's performance, delivering fuel into the combustion chamber for efficient power generation. 

    However, over time, these injectors can become clogged or damaged, leading to decreased fuel efficiency, reduced engine power, and even misfires.

 

To ensure optimal engine performance, it's essential to regularly inspect and clean fuel injectors.

The images below illustrates various fuel injector spray patterns, each representing a different type of issue. 

Let's break down what each pattern signifies:

1 FAIR but weak: This indicates that the injector is functioning but is not delivering fuel at optimal pressure.

2.  BAD: Split spray pattern: A split spray pattern suggests that the injector's internal components may be damaged or worn, causing the fuel to disperse unevenly.

3.  BAD: Jetting on left side: This indicates a problem with the injector's nozzle, resulting in a concentrated fuel spray on one side.

4.  GOOD: A uniform, cone-shaped spray pattern is ideal and signifies a healthy injector.

5. BAD: Feathering at top of spray: This pattern suggests that the injector's pintle may be damaged or misaligned, leading to incomplete fuel atomization.

 THE IMPORTANCE OF FUEL INJECTOR CLEANING 

Regular fuel injector cleaning can help prevent these issues and restore your vehicle's performance. By removing accumulated deposits and contaminants, cleaning can:

1. Improve fuel economy: Clean injectors ensure efficient fuel delivery, leading to better fuel mileage.

2. Enhance engine power: A clean fuel injector system allows for complete combustion, resulting in increased engine power and responsiveness.

4. Reduce emissions: Clean injectors contribute to cleaner emissions by ensuring proper fuel atomization.

5.  Prevent engine damage: Clogged injectors can lead to engine damage over time. Regular cleaning helps protect your engine's investment.

 HOW TO KEEP YOUR FUEL INJECTORS CLEAN 

To maintain healthy fuel injectors and prevent issues, consider the following tips:

Use high-quality fuel: Opt for premium fuel with additives that can help keep injectors clean.

Add fuel injector cleaner: Regularly use a fuel injector cleaner product recommended by your vehicle's manufacturer.

Change fuel filters: Replace your fuel filter according to the manufacturer's recommended schedule.

Avoid idling for extended periods: Excessive idling can contribute to injector deposits.

Consider professional cleaning: For severe cases of injector contamination, seek professional cleaning services.

By understanding fuel injector spray patterns and taking proactive steps to maintain their cleanliness, you can ensure optimal engine performance and extend the life of your vehicle.

Anti-lock braking systems (ABS): How Your Brakes Adapt to Prevent Wheel Lock-Up

 

In-Depth Look at ABS: How Your Brakes Adapt to Prevent Wheel Lock-Up

1. ABS Sensors: The ABS system utilizes sensors placed on each wheel to monitor their rotational speed.

2. Wheel Speed Comparison: The ABS control module constantly compares the speed of each wheel. If it detects a significant difference in speed between wheels, it indicates a potential wheel lock-up situation.

3. Hydraulic Control: When a wheel lock-up is detected, the ABS control module activates a hydraulic system connected to the brakes.

4. Brake Pressure Modulation: The hydraulic system rapidly modulates the brake pressure to the affected wheel(s) by releasing and reapplying the brake pressure. This action is done through solenoid valves in the hydraulic unit.

5. Pulsating Brake Pressure: By rapidly modulating the brake pressure, the ABS prevents the wheels from fully locking up. It allows the driver to maintain steering control and maneuverability while braking.

6. Anti-lock Effect: The rapid pressure modulation creates a pulsating effect felt through the brake pedal. This indicates that the ABS is actively working to prevent wheel lock-up.

7. Continuous Monitoring: The ABS system continuously monitors the wheel speeds, making adjustments as necessary to ensure optimal braking performance.

By preventing wheel lock-up and maintaining traction with the road surface, the ABS enhances braking efficiency and control, particular lay in emergency or slippery situations. It allows the driver to steer while braking, reducing the risk of skidding and improving overall safety.