Ergonomics: definition, need and benefits

Correct answer: A. Increasing speed alone is not a successful improvement

A successful improvement considers both health and quality. In exams do not treat production alone as ergonomic success.

Correct answer: B. Lighting glare and screen distance

Along with screen height lighting and distance also affect the eyes. In exams look for multiple factors in visual problems.

Correct answer: C. Work height reach distance and arm position

Shoulder pain is often linked with reach and height too. In exams do not assume the whole setup is correct because one part is correct.

Correct answer: D. Arrange materials by use sequence and reach zone

Arrangement by use sequence reduces searching and unnecessary movement. In exams connect workflow with ergonomics.

Correct answer: A. Fewer errors in fine work due to proper light and stable support

Proper setup protects the body and improves accuracy. In exams remember both health and quality benefits.

Correct answer: B. Unnecessary stretching of hand and shoulder

Even with a correct desk distant devices can strain the body. In exams check the position of each device separately.

Correct answer: C. When required materials are always kept at unsafe height

Wrong storage cannot be corrected by training alone. In exams separate design problems from behaviour problems.

Correct answer: D. Both sources should be combined and real work behaviour should be observed again

Direct answer: Option D is correct. Ergonomic assessment studies how a real task affects people and how the workplace design affects their safety, comfort and efficiency. Employees may notice pain, fatigue or awkward movements that a short inspection misses. An inspection may reveal posture, reach or equipment problems that employees do not mention. Therefore conflicting signals should not be dismissed; both sources should be compared, followed by another observation of actual work, questions to workers and, where needed, measurements. Option A is wrong because rejecting complaints hides evidence. Option B is wrong because an inspection can be useful. Option C is too extreme: work need not automatically stop unless there is an immediate serious danger. Option D combines evidence and checks the real behaviour, so it is the most reliable response. Memory cue: good assessment listens, observes and verifies.

Correct answer: B. Worker keeps arms unsupported in the air for long fine work

Muscle load from holding one posture for long is static strain. In exams identify fatigue without movement.

Correct answer: C. Because lighting layout fatigue or tools can also increase errors

Ergonomics studies how people, tasks, tools, equipment, and the surrounding environment work together. An error is not automatically proof that a worker is careless or incapable. Poor lighting, an awkward layout, unsuitable tools, excessive fatigue, unclear instructions, or a badly designed task can make correct performance difficult. Examining these conditions supports fairer judgments and safer improvements.

Option C is correct because it recognizes that several workplace factors may increase mistakes. A useful investigation asks what happened, when it happened, and whether the system made the task unnecessarily difficult. The other options are unreasonable: machines do not always cause errors, quitting is not the normal solution, and every employee can make mistakes. Ergonomics seeks to improve both human performance and system design.

Correct answer: A. Assess work sequence item placement and fatigue factors

Even after one visual problem is fixed other ergonomic causes may remain. In exams choose stepwise and broad checking.

Correct answer: C. Providing adjustable setup for people of different heights and abilities

Inclusive ergonomics adapts work to different needs. In exams connect equal opportunity with ergonomics.

Correct answer: B. Consider load distance assistive device and task division together

Both load and distance affect the body. In exams look for combined measures for combined risks.

Correct answer: A. The improvement increased safety but left comfort or workflow problems

Direct answer: Option A, because the improvement increased safety but left comfort or workflow problems. Ergonomics has more than one goal. A good workplace should reduce injury, support comfortable posture, make tools easy to use and allow work to flow efficiently. Follow the case: injuries decrease, so the safety part improved; however, employees may still face awkward layout, tiring movements, noise, poor temperature, slow procedures or uncomfortable equipment; these remaining problems can keep satisfaction unchanged. Option A explains both facts without contradiction. Option B is wrong because fewer injuries are a positive sign, not automatically a wrong sign. Option C is wrong because satisfaction can be affected by workload, comfort, control and work conditions. Option D is wrong because assessment is still needed to find unresolved problems and check whether the change works for workers. Option A is a useful reminder that one ergonomic measure should not be judged by one result alone. Exam cue: evaluate safety, comfort and workflow separately.

Correct answer: A. When an awkward posture is repeatedly observed before pain begins

Repeated work in an awkward or bent posture can gradually increase stress on muscles and joints even when pain has not yet appeared. Therefore, such a posture observed before symptoms is a sign of a hidden ergonomic risk. Properly adjusted tools reduce risk, so option D does not describe a risk condition. Exam tip: While identifying ergonomic risks, consider posture, repetition, force, and inadequate rest—not only pain.

Correct answer: C. Provide proper height surface seating support and break arrangement

Long floor work is affected by posture height and breaks. In exams treat home enterprise also as an ergonomic context.

Correct answer: D. Change work sequence keep tools nearby and plan breaks

Redesign can improve process placement and rest together. In exams identify system level improvement.

Correct answer: B. To identify problem patterns and priorities

The direct answer is option B: recording repeated pain complaints helps identify problem patterns and priorities. Ergonomics studies how work, tools and the workplace fit people. One complaint may be accidental, but repeated complaints are evidence. First record who feels pain, which body part is affected, during which task, how often it occurs and how serious it is. Then compare the records. If many workers report back pain during the same task, that task becomes a higher priority for checking and improving. Option A is wrong because hiding pain removes useful evidence and can allow injury to worsen. Option B is correct because organised data reveals common patterns and shows where action is needed first. Option C is wrong because the purpose is worker safety, not frightening employees. Option D is wrong because decoration does not explain or reduce a repeated physical risk. Memory cue: repeated complaints are safety information, not something to ignore.

Correct answer: A. Providing proper light and hand support in fine embroidery

Fine work loads both eyes and hands. In exams choose combined support according to task nature.

Correct answer: A. Accumulated fatigue lack of breaks or lighting change

Errors increasing with time can be linked with fatigue or environmental change. In exams look for time based patterns.

Correct answer: B. Priority-based prevention

Deciding improvement order by risk and impact is practical. In exams identify priority under limited resources.

Correct answer: C. Identify the new strain source and readjust the setup

One change can increase load on another body part. In exams consider reassessment necessary after improvement.

Correct answer: B. Considering furniture tools lighting noise work duration and training

Ergonomics is the design of work so that people can perform safely, comfortably, and effectively. It includes the complete interaction between the worker and the work system, not merely the shape or price of a chair. Furniture matters, but tools, equipment controls, lighting, noise, temperature, work duration, workload, instructions, and training can also affect comfort, fatigue, accuracy, and safety.

Option B is correct because it considers these connected elements together. Buying one chair while ignoring poor lighting, noisy equipment, long working hours, or inadequate training does not solve the whole ergonomic problem. The other choices reduce ergonomics to an isolated object or its cost. A good ergonomic assessment studies the task, environment, equipment, and human needs before recommending improvements.

Correct answer: A. Place a document holder near the screen at suitable height

Document position also affects neck posture. In exams check both main and supporting materials.

Correct answer: A. When pain repeatedly occurs after a specific work step

Pain after a specific step may be linked with work setup. In exams take patterned complaints seriously.