70 - 80% of the total focusing ability of the eye is carried out by the. Cornea Iris Lens.
At what distance should a person without hearing difficulties be able to hear an average conversational voice in a quiet room. 2 metres (6 feet). 3 metres (9 feet). 1 metre (3 feet).
A perforated ear drum could occur if. You were subjected to intermittent noise above 25 kHz You blew your nose excessively. You were subjected to continuous noise below 8 kHz.
How long is the short term memory good for remembering 7 items?. 30 to 60 seconds. Up to 30 seconds. Above 60 seconds. .
What is white finger?. A reaction when the white blood cells die and contaminate de fingers A disorder of the finger which may occur through continuous use of pneumatic tools because of reduced blood flow. A skin disorder caused by extensive contact with oils and solvents.
When someone is working in an enclosed space (such a fuel tank), another person should be outside the space in constant communication to Provide instructions to the tradesman. Ensure compliance with the maintenance manual. For safety reasons.
The scientific study of measurements of the human body is known as. Ergonomics. Physiology. Anthropometrics.
How long can the aural reflex protect the ear from loud noise?. 5 seconds. 15 minutes. 15 seconds.
What part of the eye controls the amount of light that is allowed to enter the eye? The iris. The pupil. The cornea. .
Learning of a routine by repeated practice is known as. Cognitive learning. Motor programming. Episodic memory.
The ear is used to detect. Speed. Neither acceleration or speed. Acceleration.
Light enters the eye through the. Visual cortex. Cornea. Retina.
To focus on a near object, the lens of the eye must. Be widened. Be flattened. Be thickened.
Which type of memory is most susceptible to interference from external influences? Long term. Ultra short term. Short term.
Peripheral vision is detected by the. Rods. Fovea. Cones.
Extreme discomfort experienced by a maintenance engineer due to working in a confined space is known as. Claustrophobia. Acrophobia. Agoraphobia.
What part of the eye is colour sensitive?. The rods. The cones. The iris.
What type of lens is used to overcome short sightedness?. Bi-focal Convex. Concave.
The type of memory which is most easily influenced by a person's expectations of what should have happened is the. Long term memory. Semantic memory. Episodic memory.
The inability for the eyes to accommodate sufficiently is known as. Presbyopia. Hypermetropia. Myopia.
An aircraft maintenance engineer who wears glasses or contact lenses should. Not require their duties to be restricted providing they wear their glasses/contact lenses at all times they carry out their duties. Have their duties restricted accordingly. Not require their duties to be restricted providing they have frequent checks to ensure the adequacy of their glasses/contact lenses.
Ultra short term memory has a duration of about. 10 to 20 seconds. 80 - 100 milliseconds. 2 seconds.
What type of lens is used to correct long sightedness?. Concave Convex. Bi-focal.
Visual Acuity is the ability. To differentiate between different colours. To detect objects in the peripheral vision. Of the eye to discriminate sharp detail at varying distances.
The 'working memory' is. Long term memory Short term memory. Ultra short term memory. .
Colour defective vision affects. More women than men. Almost 1 in 10 of men. Almost 1 in 10 of women.
At lower light levels, the visual sensing is performed mainly by the Fovea Cones Rods.
If an image formed on the retina of the eye is inverted relative to the viewers normal perception of the image, the viewer will. Become disoriented and dizzy Consciously mentally revert the image so as to make sense of his/her surroundings Behave and feel normal.
People with colour defective vision usually have difficulty differentiating between. Red and green. Blue and yellow. Blue and green. .
The 'cocktail party effect' is descriptive of. Divided attention. Selective attention. Focused attention.
Hypermetropia is the medical name for. Short sightedness. Long sightedness. Deafness.
What range of sound is usually impaired first with the onset of presbycusis?. High pitch sound. Low pitch sound. Mid range sound. .
The amount of light which is allowed to enter the eye can vary by a factor of. 500:1 5:1. 1:5.
Presbyopia often effects the eyes of people after the age of. 55. 70 40.
From what age does hearing ability normally begin to decline?. 50 30 40.
A person with 20/40 vision has. Worse eyesight as a person with 20/20 vision. Better eyesight than a person with 20/20 vision. The same eyesight as a person with 20/20 vision.
Long term memory capacity is usually. 4 - 8 years. 12 months Unlimited.
The inability for the eyes to accommodate sufficiently is known as Presbyopia. Myopia. Hypermetropia.
Ultra short term memory has a duration of about 10 to 20 seconds. 2 seconds 80 - 100 milliseconds. .
The memory can be aided by. Memory checking. A checklist Mind logging.
In AWN 47 what is the recommended hearing test?. The ability to hear an average conversation voice at a distance of 10 feet. The ability to hear a certain noise at 8 feet. The ability to hear an average conversation voice at a distance of 6 feet.
Iconic memory. Stores sounds and lasts up to 2 seconds Stores visual information and lasts up to 1/2 second. Stores visual information and lasts up to 2 seconds.
The first stage in information processing is. Decision. Memorizing. Perception.
Information, if not rehearsed is lost in 1 minute. 10 - 20 seconds. 30 - 40 seconds. .
In AWN 47, what is the standard hearing test?. The ability to hear a conversation in a quiet room at 2 metres. The ability to hear a conversation in a quiet room at 10 metres. The ability to hear a conversation in a noisy room at 2 metres. .
Information in the short term memory not rehearsed will be lost in. 1 - 3 months. 10 - 20 seconds. 2 - 3 weeks.
What is the CAA standard for vision?. Acceptable uncorrected vision. Acceptable corrected vision. 18/20 vision.
In the human eye most of the refraction required to bring an image into focus on the retina is accomplished by the. Lens. Iris. Cornea.
The average capacity of the working memory is about. 7 chunks of information. 4 chunks of information. 12 chunks of information. .
The retina is situated. Behind the cornea with the lens. In front of the cornea. At the back of the eye with the optic nerve.
Motor programme refers to. Motivational computer software. A task that has been carried out so many times that it becomes automatic. A task that becomes programmed into short term memory.
Memory which can be influenced by a persons expectations of what should have happened is. Echoic Semantic. Episodic.
Information in the long term memory. Is easily transferred to the short term memory. Is easily lost. Is only available under hypnosis. .
How many things can be stored in the short term memory?. 9 - 15. 0 - 5 No limit.
In the eye, the cones are used mainly in. Bright light levels and they give poor colour vision. Low light levels and they give poor colour vision. Bright light to give fine detail.
A person suffering from presbyopia would normally. Wear spectacles when reading or carrying out close detail work. Have defective colour vision and not be allowed to carry out maintenance work on cable looms. Be short sighted and need to wear spectacles to see objects more than 30 cm away.
Noise signals are carried to the brain by the. Sensory nerve. Auditory nerve. Eustachian nerve.
Poking sharp objects into the ear should be avoided as it is likely to result in Tinnitus ringing. Conductive hearing loss. Tympanic membrane perforation.
Attention Getters are designed to. To gain the operators attention whilst allowing them to continue with the task in hand. To make the operator focus his/her attention fully on the task in hand. To get the operators full attention.
At what maximum frequency does the human ear hear?. 16 kHz. 8 kHz. 20 kHz.
Motor programmes. Are behaviour subroutines. Require conscious thought to engage. Are stored as working rules in long term memory.
The pupil of the eye grows smaller. In condition of reduced light. In condition of increased light. To focus the fovea.
Conductive deafness can be caused by damage to the. Otoliths. Semi circular canals. Cochlea.
Detail is best sensed by the___and movement best sensed by the___ . The periphery and the periphery. The periphery and fovea The fovea and periphery. .
If a person is colour blind, which colours would be most difficult to see? Red and green Blue and red Yellow and red.
Myopia is _____and a______ lens is needed to correct it. Long sightedness and concave. Short sightedness and convex. Short sightedness and concave.
The Otoliths detect Angular acceleration. Linear acceleration. Both angular and linear acceleration.
The nose Filters the air into the lungs. Filters, warms and moistens the air into the lungs. Filters the air into the lungs.
The most common cause of myopia is. Weak accommodation A shortened eyeball. An elongated eyeball.
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