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- State three advantages of toroidal type transformer over shell type transformer.(Solved)
State three advantages of toroidal type transformer over shell type transformer.
Date posted: September 18, 2019.
- The labels of two reagent bottles contained the following safety symbols.(Solved)
The labels of two reagent bottles contained the following safety symbols.
a) What do the symbols mean ? Explain.
b) Which of the reagent is more harmful ?
Date posted: September 18, 2019.
- Figure 4 below shows a block drawn in isometric projection.(Solved)
Figure 4 below shows a block drawn in isometric projection.
Figure 4
Using first angle orthographic projection, draw the following views full size
a) Front elevation in the direction of arrow F
b) End elevation in the direction of arrow E
c) Plan
Date posted: September 18, 2019.
- Name an hormone that controls the formation of abscission layer in leaves and fruits.(Solved)
Name an hormone that controls the formation of abscission layer in leaves and fruits.
Date posted: September 18, 2019.
- Name the logic gate shown in figure 3 below(Solved)
Name the logic gate shown in figure 3 below.
Figure 3
Name.............
Date posted: September 18, 2019.
- Figure 2 shows a resistor network.(Solved)
Figure 2 shows a resistor network.
Figure 2
Find value of current I
Date posted: September 18, 2019.
- What volume of oxygen gas at r.t.p will be liberated at the anode when a current of 3 amperes is passed through magnesium sulphate solution...(Solved)
What volume of oxygen gas at r.t.p will be liberated at the anode when a current of 3 amperes is passed through magnesium sulphate solution for 45 minutes and 30 seconds. (Molar gas volume at r.t.p = 24000cm3, Faraday constant = 96500
Coulombs)
Date posted: September 18, 2019.
- The following process takes place in a plant organelle.
Water ? Hydrogen atoms + Oxygen(Solved)
The following process takes place in a plant organelle.
Water → Hydrogen atoms + Oxygen
i) Identify the organelle in which the process takes place.
ii) Name the process.
iii) State two conditions required for the process to take place.
Date posted: September 18, 2019.
- Determine the resistance of each of the following carbon resistors if their colour code is:
i. Blue Orange Brown Silver
ii. Grey Red Yellow(Solved)
Determine the resistance of each of the following carbon resistors if their colour code is:
i. Blue Orange Brown Silver
ii. Grey Red Yellow
Date posted: September 18, 2019.
- State two factors that determine inductance of a coil.(Solved)
State two factors that determine inductance of a coil.
Date posted: September 18, 2019.
- When bismuth III Chloride is added to water, a reaction occurs and a white precipitate forms as shown below.
BiCI3(aq) + H20(l) BiOCl(s) + 2HCl(aq)
What would...(Solved)
When bismuth III Chloride is added to water, a reaction occurs and a white precipitate forms as shown below.
BiCI3(aq) + H20(l) BiOCl(s) + 2HCl(aq)
What would be the effect on the amount of the precipitate formed if sodium hydroxide solution is added to the equilibrium mixture ? Explain your answer.
Date posted: September 18, 2019.
- Name two types of inductor cores.(Solved)
Name two types of inductor cores.
Date posted: September 18, 2019.
- Describe three characteristics of magnetic lines of force.(Solved)
Describe three characteristics of magnetic lines of force.
Date posted: September 18, 2019.
- List four layout tools used in metal fabrication.(Solved)
List four layout tools used in metal fabrication.
Date posted: September 18, 2019.
- Name the materials used to make the following parts of ac machine in Table 1 and in each case state one reason why the material...(Solved)
Name the materials used to make the following parts of ac machine in Table 1 and in each case state one reason why the material is used.
b) State three factors to consider when choosing motor for a particular installation.
Date posted: September 18, 2019.
- The figure represents different types of muscles. Study them carefully and answer the questions that follow.(Solved)
The figure represents different types of muscles. Study them carefully and answer the questions that follow.
(i) Identify the muscles labelled C and B.
(ii) Using observable features only; state two differences between muscles labelled B and D.
(iii) State one function of each of the muscles labelled B and C.
(iv) Give one adaptation of a muscle labelled C to its function.
Date posted: September 18, 2019.
- When 10g of a mixture of potassium chloride and anhydrous sodium sulphate is dissolved in water and excess barium chloride solution added. 6.9g of Barium...(Solved)
When 10g of a mixture of potassium chloride and anhydrous sodium sulphate is dissolved in water and excess barium chloride solution added. 6.9g of Barium sulphate is precipitated. Calculate the composition of the mixture. (K .= 39. Cl =35.5, Na=23, O =16, Ba=137)
Date posted: September 18, 2019.
- Sketch and label the schematic diagram of a dc shunt motor connected to a supply.(Solved)
Sketch and label the schematic diagram of a dc shunt motor connected to a supply.
Date posted: September 18, 2019.
- Photographs B, C and D below represent support structures in plants. Use them to answer the questions that follow.(Solved)
Photographs B, C and D below represent support structures in plants. Use them to answer the questions that follow.
(i) Name the support structure represented by photograph B
(ii) Explain briefly how the coiling in photograph B occurs
(iii) Name the structures labeled L on photograph C.
iv). Photograph D is a magnified photomicrograph of support tissues found in part x of photograph C. Give the name of the tissue labeled t.
(vi) Describe the structure of the cells of the tissue named in (a) (iv) above
Date posted: September 18, 2019.
- Three capacitors are connected as shown in Figure 1.(Solved)
Three capacitors are connected as shown in Figure 1.
Figure 1
Calculate:
i. The equivalent capacitance
ii. Charge stored in the 26μF capacitor
Date posted: September 18, 2019.
- a)Name the excretory product produced in the liver and used in the intestine.
(b) State two functions of the waste product named in (a) above.(Solved)
a)Name the excretory product produced in the liver and used in the intestine.
(b) State two functions of the waste product named in (a) above.
Date posted: September 18, 2019.
- Explain why iron nails rust faster in sodium chloride solution than in tap water.(Solved)
Explain why iron nails rust faster in sodium chloride solution than in tap water.
Date posted: September 18, 2019.
- After installing new cells in a 2 cell torch it failed to light when switched on. State two possible causes for the failure.(Solved)
After installing new cells in a 2 cell torch it failed to light when switched on. State two possible causes for the failure.
Date posted: September 18, 2019.
- State two reasons why the rotating field alternator is preferred to the rotating armature type.(Solved)
State two reasons why the rotating field alternator is preferred to the rotating armature type.
Date posted: September 18, 2019.
- List two power company equipment and two consumer’s equipment found at a domestic consumer’s intake point.(Solved)
List two power company equipment and two consumer’s equipment found at a domestic consumer’s intake point.
Date posted: September 18, 2019.
- a)The range of a moving iron instrument of resistance 8 ohms is extended by using a shunt resistor of 0.04 ohm. If the full scale...(Solved)
a)The range of a moving iron instrument of resistance 8 ohms is extended by using a shunt resistor of 0.04 ohm. If the full scale deflection current is 10mA, determine the maximum current that the modified instrument can measure.
b) State two advantages and two disadvantages of the moving iron instrument over moving coil instrument
Date posted: September 18, 2019.
- State the role of Directorate of Industrial Training.(Solved)
State the role of Directorate of Industrial Training.
Date posted: September 18, 2019.
- List two safety precautions taken while drilling through a piece of sheet metal.(Solved)
List two safety precautions taken while drilling through a piece of sheet metal.
Date posted: September 18, 2019.
- The second, third and fourteenth terms of an Arithmetic progression are the three consecutive terms of a geometric progression. The 10th term of the arithmetic...(Solved)
The second, third and fourteenth terms of an Arithmetic progression are the three consecutive terms of a geometric progression. The 10th term of the arithmetic progression is 18. Find;
a) The first term and the common difference of the progression.
b) The sum of the first 10 terms of the progression.
c) The sixth term of the a.p
Date posted: September 18, 2019.
- The diagram below represents a food web from lake Nakuru National Park.(Solved)
The diagram below represents a food web from lake Nakuru National Park.
a) i) Identify the organism with the largest biomass.
ii) Give a reason for your answer in a (i) above.
b) From the food web, isolate a food chain ending with snakes as tertiary consumers.
c) i) Name any two organisms not shown in the food web but would be present in the ecosystem.
ii) What is the role of the organisms stated in c (i) above?
d) From the food web, snakes and leopards feed on rabbits. What name is given to this kind of competition?
e) From the food web, name an organism that may be both a secondary and a tertiary consumer.
Date posted: September 18, 2019.