Principles of electricity paper
Quiz Summary
0 of 40 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
Results
Results
0 of 40 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- Current
- Review
- Answered
- Correct
- Incorrect
-
Question 1 of 40
1. Question
1. What is the decimal value for the fraction shown below?
5/6
-
Question 2 of 40
2. Question
2. What can the formula shown below be transposed to in order to determine the cross sectional area?
R= (p x L) / A
-
Question 3 of 40
3. Question
3. What is the SI unit for length?
-
Question 4 of 40
4. Question
4. What is the SI unit of measurement for density?
-
Question 5 of 40
5. Question
5. What Unit symbol ‘Ω’ is used when recording values of what quantity?
-
Question 6 of 40
6. Question
6. What is the Electro-motive force measured in?
-
Question 7 of 40
7. Question
7. What instrument would be used in order to determine the resistance of a d.c circuit?
-
Question 8 of 40
8. Question
8. What would be the result of comparing the mass of an object on earth and in space?
-
Question 9 of 40
9. Question
9. What is the pivot point of a lever called?
-
Question 10 of 40
10. Question
10. What are machined cogs of different sizes, where one turns another producing different speeds know as?
-
Question 11 of 40
11. Question
11. What is the approximate force exerted on the ground below a mass of 8,6kg?
-
Question 12 of 40
12. Question
12. What is the formula used to determine mechanical power?
-
Question 13 of 40
13. Question
13. What is the approximate energy required to raise a mass of 18kg a distance of 20 m?
-
Question 14 of 40
14. Question
14. What is the efficiency of a motor that produces an output of 3kW when the input is 3.6kW?
-
Question 15 of 40
15. Question
15. What part of an atom orbits around the nucleus?
-
Question 16 of 40
16. Question
16. Which of the following materials is not a good conductor?
-
Question 17 of 40
17. Question
17. What is the resistance of an electrical conductor directly proportional to?
-
Question 18 of 40
18. Question
18. What volume is used to measure resistivity for a given material?
-
Question 19 of 40
19. Question
19. What is the relationship between voltage and current across the resistors for the circuit shown?
-
Question 20 of 40
20. Question
20. What type of circuit would the voltage vary across each resistor but the current remain constant?
-
Question 21 of 40
21. Question
21. What would be the supply voltage for the circuit show?
-
Question 22 of 40
22. Question
22. What would the supply voltage be for the circuit shown?
-
Question 23 of 40
23. Question
23. What would be the supply current (Is) for the circuit shown?
-
Question 24 of 40
24. Question
24. What would be the current that flows through the 20 Ω resistor in the circuit shown?
-
Question 25 of 40
25. Question
25. What is the total circuit resistance for the circuit shown?
-
Question 26 of 40
26. Question
26. What is the total resistance of three resistors connected in series of having a resistance of 20 Ω, 30 Ω and 50 Ω respectively?
-
Question 27 of 40
27. Question
27. Which one of the below shows how the power dissipated by a circuit may be determined?
-
Question 28 of 40
28. Question
28. Which one of the below does not affect voltage drop in a circuit?
-
Question 29 of 40
29. Question
29. What will happen to the conductor temperature when the current passing through it rises?
-
Question 30 of 40
30. Question
30. What would be the effect of placing the north poles of two magnets together?
-
Question 31 of 40
31. Question
31. What is the SI unit of magnetic flux?
-
Question 32 of 40
32. Question
32. How can the magnetic field set-up by a current through a coil wire be reversed?
-
Question 33 of 40
33. Question
33. At what point in the rotation would the maximum EMF be induced in the image shown?
-
Question 34 of 40
34. Question
34. How long will a single rotation of an alternator intended to provide a 50 Hz supply frequency take to occur?
-
Question 35 of 40
35. Question
35. What would be the value of EMF induced from a simple alternator, having a 0.2m conductor, rotating at a velocity of 20 m/s within a magnetic field flux density of 3 Tesla?
-
Question 36 of 40
36. Question
36. What represents the periodic time in the image?
-
Question 37 of 40
37. Question
37. What electronic component does a dimmer switch use to control the power and light output?
-
Question 38 of 40
38. Question
38. Which electronic component does a central heating boiler use to measure hot water temperature?
-
Question 39 of 40
39. Question
39. Which electronic component is used to store energy?
-
Question 40 of 40
40. Question
40. How many diodes are used in a full wave bridge rectifier?