PRECIOUS SECONDARY SCHOOL, ARAMOKO-EKITI
PROMOTION EXAMINATION FOR 2016/2017 ACADEMIC SECTION
SUBJECT: BASIC TECHNOLOGY CLASS: JSS TWO DURATION:1hour
INSTRUCTION: Answer all questions.
All the following are good maintenance practices in metal work except (a) complete abandon meat of the entire machine once a component is faulty (b) regular lubrication (c) repair and replacement of damage component.
The following are type of grinding machine except (a) belt grinder (b) plain grinder (c) bench grinder.
The following are drive mechanism except (a) belts (b) chains (c) ropes.
Which of the following is not a type of belt drive (a) T-belt (b)V-belt (c) variable belt.
One of the characteristic of V-belt is that they have (a) marks (b) grooves (c) lining
All the following are advantages of using chain drives except (a) small tension (b) no slippage (c) quiet operation.
Which of the following is not a disadvantage of using chain drives? (a) they are noisy in hope ration (b) they are high production cost (c) they slip under load.
Fluid power can be transmitted through which of the following (a) hydraulics (b) electricity (c)stirring.
The transfer of power from one point to another by means of air is called (a) hydraulic system (b) pneumatic system (c) mechanism system.
A device that moves fluids by mechanical action is called a (a) compressor (b) driver (c) pump.
A device that can be used for wetting plant in a garden by spraying water into the air is known as (a) pump (b) sprinkle (c) compressor.
In order to replace the type of a car which of the following would be useful to lift the car up (a) water wheel (b) air compressor (c) hydraulic jack
An air compressor is an example of which type of these machines (a) pneumatic (b) sprinkle (c) centrifugal.
A pneumatic device that operate by driving an internal hammer up and down is known as (a) jack pump (b) jack hammer (c) hammer pump
The following are drive mechanism except (a) belt gear (b) chain gear (c) rope gear.
Gear ratio can be used to determine (a) the spread of rotation (b) the type of gear (c) the number of gear.
The major types gear include all the following except (a) internal (b) straight (c) external.
A major disadvantage of gear is that (a) they are easily misaligned (b) the are expensive to maintain (c) they slip under load.
Gear have the following advantage except that (a) the are cheap to produce (b) they have high efficiency (c) they use very little space.
Which of the following is not a type of sander (a) belt sander (b) metal sander (c) disc sander
SECTION B
(1a) Identify 5 machines that make use of gear (1b) Define gear?
(2a) List five uses of pneumatic machine (2b) State three advantages of hydraulic machines.
(3a)Identify 5 machines each that makes use of belt and chains.
(3b) List three types of belt and pulleys and explain them.
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