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State the uses of the Cathode Ray Oscilloscope (CRO)
Date posted:
April 12, 2018
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Give the duties of the Portuguese captain along the coast.
Date posted:
April 12, 2018
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An electric cooker has an oven rated 3 kW, a grill rated 2 kW and two rings each rated 500 W. The cooker
operates from a 24 0V mains. What is the cost of operating all the parts for 5 minutes if electricity costs Sh 1.50 per unit?
Date posted:
April 11, 2018
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An electric cooker has an oven rated 3kW, a grill rated 2kW and two rings each rated 500W. The cooker
operates from 240V mains. Would a 5A fuse be suitable for the cooker assuming that all the parts are switched
on?
Date posted:
April 11, 2018
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Some length of a power line has a resistance of 10Ω and is transmitting 11kV and a current of 1A. If the
voltage is stepped up to 160kV by a transformer, calculate:
a) The initial power loss
b) The power loss after step up
Date posted:
April 11, 2018
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State the main causes of energy losses in transformers:
Date posted:
April 11, 2018
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A student designed a transformer to supply a current of 10A at a potential difference of 60V to an electric motor from an ac supply of 240V. if the efficiency of the transformer is 80%, calculate:
a) The power supplied to the transformer.
b) The current in the primary coil
Date posted:
April 11, 2018
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A bob of mass 1kg is moving in a uniform circular path in a vertical plane of radius 1m. If it is whirled at a
frequency of 2 cycles per second, calculate:
a) The tension in the string when the bob is at the top part of the circle
b) Tension when it is at the bottom
c) At what position is the string likely to break? Why?
d) What is the minimum speed required to maintain the string under tension.
Date posted:
April 11, 2018
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An object of mass 0.4kg is rotated by a string at a constant speed, v in a vertical circle of radius 1m. If the
minimum tension in the string is 3N, calculate :
a) The speed, v
b) Maximum tension in the string
c) The tension when the string is just horizontal
Date posted:
April 11, 2018
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An object of mass 8kg is whirled round rapidly in a vertical circle of radius 2m with a constant speed of
6m/s. Calculate the maximum and minimum tension in the string. Take g=10N/kg
Date posted:
April 11, 2018
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Explain the role of government in promoting the traditional African culture.
Date posted:
April 11, 2018
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A stone of mass 0.6kg attached to a string of length 0.5m is whirled in a horizontal circle at a constant
speed. If the maximum tension in the string is 5N before it breaks, calculate:
a) The maximum speed of the stone
b) The maximum number of revolutions per second it can make
Date posted:
April 11, 2018
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A car of mass 100kg moves round a circular track of radius 100m with a linear speed of 20m/s. calculate:
a) The angular velocity
b) The centripetal force
c) The centripetal acceleration
Date posted:
April 11, 2018
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State the applications of digital cameras.
Date posted:
April 11, 2018
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Name a structure in veins which is not found in other blood vessels that adapts them to their function
Date posted:
April 11, 2018
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What is the function of ash in a compost heap?
Date posted:
April 11, 2018
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Distinguish between Caption and Required properties of a field.
Date posted:
April 11, 2018
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Distinguish between Validation rule and Validation text.
Date posted:
April 11, 2018
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What is the last chapter, "Sûrah", of the Noble Qur'an?
Date posted:
April 11, 2018
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Name the cell organelles that would be abundant in white cell destroying pathogens, palisade mesophyll cells and skeletal muscle cells.
Date posted:
April 11, 2018
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List and explain examples of data types used in Ms Access.
Date posted:
April 11, 2018
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How was the problem of sickness dealt with in traditional African society?
Date posted:
April 11, 2018
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Starting with lead(ii)oxide, describe how you would prepare a solid sample of lead (ii)chloride.
Date posted:
April 11, 2018
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Define a "Field" in relation to databases.
Date posted:
April 11, 2018
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Define a "Record" in relation to databases.
Date posted:
April 11, 2018
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Eleza maana ya semi
Date posted:
April 11, 2018
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Give two sources of information that you would use in preparation of a field study of an area recently affected by intense earthquake.
Date posted:
April 11, 2018
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Eleza maana ya Ngomezi.
Date posted:
April 11, 2018
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The sum of two numbers x and y is 40. Write down an expression in terms of x for the sum of the squares of the two numbers.
Date posted:
April 11, 2018
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Explain the main components of a database system.
Date posted:
April 11, 2018