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Encyclopedia of Human Body Systems [Free PDF Download]

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ACADEMICS

ALL 200L Materials You Need For 1st Semester

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Introduction:

As you embark on your first semester, we’ve compiled a comprehensive list of resources to support your academic journey. From textbooks to class notes and exam materials, everything you need is right here. Let’s dive in!

Some Textbooks That You Might Need

These are the collections of textbooks that you might need, but it is essential to know that you should on the materials that you have been provided by your lecturers. Use the textbooks to read the materials when you don’t understand, use the textbooks to practice questions. Do not focus on knowing everything in the textbook, focus on knowing everything in your class notes and slides. You can check below, some class notes are gotten from the textbooks below.🤫

CHM 203 Textbooks

Abbey Chemistry

Peter Atkins Physical Chemistry

PHY 205 Textbooks

Modern Physics (For Your Tutorial Questions)

Heisberg and Resnick Quantum Physics (Where Class Notes was gotten from 2022/2023 session)

Concepts of Modern Physics Arthur Bieser

Modern Physics By Serway




Course Outlines

Materials

As a student in any school, it is best to read the materials provided by your lecturers. That is why I have provided the class notes and slides that have been used in previous years, it might be the same with yours this year.

Class Notes

Most of our materials for 1st semester were given during class. Below are the class notes for 2022/2023 session. You should check with your current class notes if they are the same.

BIO 101 Class Notes

CHM 203 Class Notes

CHM 201 Compiled Slides

PHY 203 Class Notes

PHY 205 Class Notes

MTH 201 Class Notes

MAC 201 Materials

Google Classroom Codes

As we got most of our materials from class, some were also dropped on google classroom, that might not be in the classnotes

Class Codes for 2022/2023 Session

CHM 201 – tff6kws

CHM 203 – sxnpv4x

MTH 201 – fsqi5tk

BIO 101 – vypll32

Phy203 – hq3oast

Test and Exam Questions From Last Sessions

Below are the test and Exam Questions from 2022/2023 session I could gather







Quizzes

There are a number of quiz that I created, basically from class notes and materials given to us by our lecturers. People later told me it was helpful for them. So you should try them out, you might be lucky to find them in your test or exam.😉

PHY 203 Quiz (About 70 Questions)

PHY 205 Quiz

CSC 201 Quiz (About 40 Questions)

See Other Materials from 2021/2022 session

To download materials from 2021/2022 session, click here, you will see the materials they used, class notes, some test and exam question and course outlines.

For courses like BIO 101, I advise that you check and read slides from 2021/2022 session that are in google classroom. Click here to get all materials used for 2021/2022 session.

Important Note

While these resources are valuable, remember to prioritize the materials provided by your lecturers for your current classes. Use these supplementary resources for extra practice and clarification.

Wishing you a successful semester ahead!

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ACADEMICS

PHY 203 Quiz For OAU

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Created by Oluwaferanmi Akinyele

PHY 203 Quiz

These are likely questions for our test based on our class notes, few questions our lecturers asked in class, examples in the notes and some online questions.

 

This quiz consists of 95 questions covering all the topics we have been taught in PHY 203 till present. I hope we all find it helpful.

You have 50 mins for this quiz.

 

 

 

Contributors: Zainab, Verah & Lammylex (CHM department)

and Shukroh, Great Blakky and Ebun (PHY department)

 

Goodluck!❤️

1 / 95

1. A resistor is regarded as a circuit element which puts energy into a circuit

2 / 95

2. Circuit elements are connected in parallel when a common ……………. is applied to each elements

3 / 95

3. The loss due to the reversal of magnetization in the transformer core is known as

4 / 95

4. Select the correct options only

I. Pentavalent impurities provide large number of free electrons to the semiconductor.

II. Trivalent impurities provide large number of free electrons to the semiconductor.

III. Trivalent impurities provide large number of holes to the semiconductor.

IV. Pentavalent impurities provide large number of holes to the semiconductor.

5 / 95

5. A perfect amplifier has all of the following properties except:

6 / 95

6. In a semiconductor, as temperature increases, conductivity ………………

7 / 95

7. Calculate the equivalent resistance

8 / 95

8. If a circuit has the following parameters Vcc =20V, Rs +Rm = 9.3KΩ, Vbe = 0.7, Im =1mA, and Β = 100. Calculate the meter current when E =10V and the voltmeter input r with or without the transistor.

9 / 95

9. An Inductor tend to smooth sudden change in ……………..

10 / 95

10. To convert a multiplier to an ammeter, a ………. resistance is connected in ……………… with a galvanometer

11 / 95

11. A capacitor stores charge and hence, electric energy

12 / 95

12. A meter is protected in the case of accidental workload by connecting …………… in ………….. with a voltmeter

13 / 95

13. Which of these will result in forward biasing

I. when certain dc voltage is applied to the junction in such a direction that it cancels the potential barrier thus permitting the flow of current

II. Connecting the negative terminal of the battery to the p-type and positive terminal to the n-type

III. Connecting the positive terminal of the battery to the p-type and negative terminal to the n-type

IV. when certain dc voltage is applied to the junction in such a direction that the potential barrier is increased

14 / 95

14. Which of the following is/are correct?

I. Bipolar junction transistors control the current by varying the number of charge carriers

II. Voltage between 2 terminals are indicated by repeated letters

III. The emitter is lightly doped to reduce junction capacitance

IV. The emitter-base junction is forward biased

15 / 95

15. A mesh is any closed path in a circuit which does not enclose any other closed path inside it

16 / 95

16. Which of the statements about PN junction is true

I. A PN junction presents a high resistance if forward biased.

II. A PN junction presents a high resistance if reversed biased.

III A PN junction presents a low resistance if forward biased.

IV. A PN junction presents a low resistance if reversed biased.

 

17 / 95

17. Calculate Ia, Ib and Ic

18 / 95

18. The e–h+ pair can also be called ____

19 / 95

19. The resistivity of a semiconductor is ………. that of an insulator, and …………that of conductors

20 / 95

20. A emitter-follower circuit has Vcc =12V, Rm = 1KΩ and a 2mA meter. If the amplification factor of the resistor is 80 and Vbe = 0.7. Calculate the suitable r for Rs to give fsd when E= 5V.

21 / 95

21. A transformer only increases the voltage with corresponding increase in current

22 / 95

22. AC Current and Voltage may vary with time. True or False?

23 / 95

23. Which of the following statements is/are true? I. A multimeter can be used as an ammeter when low resistance is connected in parallel with the galvanometer II. A low sensitive meter will measure Voltage perfectly III. A multimeter cannot be used to determine circuit continuity IV. A multimeter can be used as an voltmeter when high resistance is connected in series with the galvanometer

24 / 95

24. The most versatile circuit configuration for transistors is the

25 / 95

25. A node is a collection point for two or more banches

26 / 95

26. Which of the following is correct

I. Small changes in V(BE) will produce large current changes in I(C) & I(E)

II. Small changes in V(CE) have little effect on I(B)

III. Small changes in V(CE) will produce large current changes in I(C) & I(E)

I, II, III & IVIV. Small changes in V(BE) will produce large current changes in I(B)

27 / 95

27. Coils are …………… separated, but ……………. linked together

28 / 95

28. In electronics, _____ refers to the use of DC voltage to establish certain operating conditions for an electronic device.

29 / 95

29. A hole can also be described as a _________

30 / 95

30. Consider the following statements and choose only correct answers

I. The resistivity of a semiconductor is less than that of an insulator and more than a conductor

II. As temperature increases, the conductivity of semiconductors decreases

III. We can consider a semiconductor as a resistance material

IV. Semiconductors have a negative temperature coefficient of resistance

31 / 95

31. The emf that gets induced in the secondary winding according to Faraday’s law of electromagnetic induction is called?

32 / 95

32. Copper loss is usually larger than other losses

33 / 95

33. In a multimeter, when the variable resistance and the fixed resistance are connected in series with the battery and galvanometer, the multimeter functions as

34 / 95

34. A capacitor C and an Inductor L store…………….. and ……………….. respectively

35 / 95

35. When a small amount of trivalent impurity is added to a pure semi conductor, the semi conductor becomes

36 / 95

36. Calculate the current flowing in the circuit

37 / 95

37.

How many branches, nodes, loop and mesh do we have here?

38 / 95

38. Inductors are very common in high-frequency circuit

39 / 95

39. A galvanometer measures and detects extremely small currents both in ………………… and ………………………

40 / 95

40. In pure inductors, current ……… the voltage by ……

41 / 95

41. when the sensitivity of a meter is high, it means the meter has ………….

42 / 95

42. Any transistor designed must operate in the ________ region of the characteristic curve

43 / 95

43. The potential barrier of a P-N junction depends on which of the following except

44 / 95

44. What is known as eddy current loss in a transformer?

45 / 95

45. The process of setting up a current to operate a transistor at a desired point on its characteristic curve is known as __________

46 / 95

46. A p-n junction is also known as

47 / 95

47. A Thevenin’s equivalent circuit contains an equivalent source Vth in parallel with an equivalent resistor Rth

48 / 95

48. Which of the following transformers has a high rating?

49 / 95

49. A transformer consists of two inductive coils namely;

50 / 95

50. A laminated steel core that has high silicon content provides

51 / 95

51. No electrons can stay in the forbidden gap because

52 / 95

52. A multiplier measures ………………, ………………….. and …………………

53 / 95

53. Which of the following is/are true

I. Reverse biasing prevents the flow of charge carriers across the junction.

II. Forward biasing is created when the positive terminal is connected to the n-type part of the PN junction.

III. In practice, when we apply reverse biasing to a PN junction, all the charge carriers stops to flow.

54 / 95

54. A semiconductor in an extremely pure form is known as ………….

55 / 95

55. The arrangement of atoms in a repetitive manner is known as

56 / 95

56. The separation between conduction band and valence band on the energy level diagram is called ________

57 / 95

57. The Norton’s equivalent circuit contains a Norton equivalent source “I(N)” in parallel with an equivalent resistor R(N)

58 / 95

58. What type of bonds exist in semiconductors

59 / 95

59. Which of the following is true about transformers?

I. Open circuit test are done with a load on the transformer.

II. Copper loss is due to the ohmic resistance of the transformer windings.

III. Open circuit test is done to determine the ‘no load loss’ of the transformer.

IV. A transformer is electrically linked.

60 / 95

60. Which of this is true

61 / 95

61. A capacitor and an Inductor in an AC circuit is referred to as

62 / 95

62. The principle behind the working of a transformer is _________

63 / 95

63. Circuit elements connected in series have common …………….. passing through each element

64 / 95

64. Depletion layer serves as barrier to the movement of free electrons.

65 / 95

65. Loading effect of a meter happens because……………

66 / 95

66. The transistor is a three-terminal device that we can use to form a _____________ circuit

67 / 95

67. p-type and n-type semiconductor join together to form a …………….. known as …………….

68 / 95

68. A material that releases an electron from the valence band into the conduction band when a photon of light is incident on it is a ___________

69 / 95

69. In checking for continuity of circuit which on these is used

70 / 95

70. Inductors smoothen sharp sudden changes in ……….

71 / 95

71. Which of the following is true about the effect of temperature on semiconductors

I. At absolute zero, there are no free electrons.

II. Above absolute zero, bonds break and electrons move under the influence of the applied electric field.

III. The semiconductor has its highest conductivity at absolute zero

IV. The semiconductor behaves as a perfect insulator at absolute zero

72 / 95

72. The transistor is a current __________ device.

73 / 95

73. Why is a laminated steel core used in a transformer instead of a solid core?

74 / 95

74. A inductor stores energy in its _________

75 / 95

75. The collector current is determined by the _________

76 / 95

76. Which of this must be connected to multimeter to be able to measure AC voltages?

77 / 95

77. The loss due to ohmic resistance of the transformer windings

78 / 95

78. What are the examples of passive elements?

79 / 95

79. Calculate Rth, Vth, and I5

80 / 95

80. A component that allows the flow of current in only one direction is called ……….

81 / 95

81. Extrinsic semiconductors have more current conducting capacity than intrinsic semiconductors

82 / 95

82. What is the number of branches, nodes, loops, and meshes?

83 / 95

83. …………………. are responsible for the conduction  in a conductor

84 / 95

84. The majority carriers in an n-type semiconductor is ?

85 / 95

85. An ammeter also detects the direction of the flow of current

86 / 95

86. On the basis of their use, transformers are classified as

87 / 95

87. In an RL circuit voltage across the resistor increases exponentially

88 / 95

88. The core in a transformer provides ?

89 / 95

89. In a transformer, most flux which get linked to the secondary winding is called?

90 / 95

90. A variable resistor in an electric circuit is for ……………

91 / 95

91. A 6600/550V, 25KVA transformer has iron losses of 350W and its 1º and 2° winding resistances are 14.5 and 0.1Ω respectively. Determine the full load efficiency at a power factor of unity.

92 / 95

92. The voltage signal at the collector is out of phase with the signal at the base by:

93 / 95

93. In a RC circuit, voltage across the resistor ………………. exponentially with time

94 / 95

94. ________ converts alternating currents into direct currents

95 / 95

95. Voltmeter draws …………………… current

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ACADEMICS

Quiz for CSC 201

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You have 30 mins for this quiz

Time up!


Created by Oluwaferanmi Akinyele

CSC 201

Preparatory Quiz for CSC 201 Test 2022/2023. This quiz contains 40 multiple choice questions.

 

 

The questions are compiled by Physics department gurus;

Ebun (Class rep)

Levi

Oluwaferanmi

Great

and Blakky

1 / 40

The outcome of a programming activity is a _________

2 / 40

What is the value of the following expression?

“`float(22//3+3/3)“`

3 / 40

‘Bit’ stands for

4 / 40

The following are program elements except

5 / 40

Machines developed in mechanical era include the following except

6 / 40

A computer software comprises of ___________ software & ___________ software

7 / 40

Which of the following is the correct extension of the Python file?

8 / 40

Which type of Programming does Python support?

9 / 40

The following are python reserved words excerpt

10 / 40

Which of the following is true for variable names in Python?

11 / 40

The following is true about python except

12 / 40

What is the average value of the following Python code snippet?

“`grade1 = 80“`

“`grade2 = 90“`

“`average = (grade1 + grade2) / 2“`

13 / 40

The ______ is the brain of the computer that performs simple arithmetic & logical operations

14 / 40

Which of the following functions is a built-in function in python?

15 / 40

What are the values of the following Python expressions?

“` 2**(3**2)“`

“` (2**3)**2“`

“` 2**3**2“`

16 / 40

Which of the following is an invalid variable?

17 / 40

What is the maximum possible length of an identifier in Python?

18 / 40

Is Python code compiled or interpreted?

19 / 40

Which among the following list of operators has the highest precedence?

“` +, -, **, %, /, <<, >>, |“`

20 / 40

Python was created in what year

21 / 40

The expression

“`2**2**3“` is equal to “`(2**2)**3“`

22 / 40

Machines developed in transistor era include the following except

23 / 40

Which one of the following is the use of function in python?

24 / 40

What are the two main types of functions in Python?

25 / 40

The following are high-level languages except

26 / 40

Which of the following is used to define a block of code in Python language?

27 / 40

The correct sequence of the history of modern era is

28 / 40

Operating Systems includes the following except

29 / 40

Is Python case sensitive when dealing with identifiers?

30 / 40

Which of the following variable naming is correct

31 / 40

In flow charts, a terminal is represented with what shape

32 / 40

Who developed Python Programming Language?

33 / 40

A ________ is a sequence of instructions telling the computer what to do.

34 / 40

Which of the following character is used to give single-line comments in Python?

35 / 40

What is the order of precedence in python?

36 / 40

Application software includes the following except

37 / 40

What will be the output of the following Python expression?

“`round(4.576)“`

38 / 40

Which of the following is an invalid statement?

39 / 40

What will be the value of X in the following Python expression?

“`X = 2+9*((3*12)-8)/10“`

40 / 40

Which keyword is used to call a function in Python language?

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ACADEMICS

PHY 205 Quiz

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OAU PHY 205 Quiz

PHY 205

1 / 34

1. High beam of cathode ray in vacuum tube can be steered and manipulated by

2 / 34

2. Why is it necessary for the tube to be in a vacuum during thermionic emission?

3 / 34

3. In Thompson’s experiment, a a beam of electron travelling at 6.8 x 10^7m/s is bent into a circular path of radius 4cm in the magnetic of induction 10^-2 W/m2. Find the specific charge to mass (e/m)

4 / 34

4. What is thermionic emission?

5 / 34

5. In what devices are cathode ray tubes commonly used?

6 / 34

6. What happens when a metal wire is heated in a vacuum during thermionic emission?

7 / 34

7. What type of radiation can be produced using cathode ray tubes?

8 / 34

1. Wavelength is inversely proportional to an object’s mass

9 / 34

2. What type of process is represented by this equation e† + e¯ → ϒ + ϒ

10 / 34

3. Which branch of physics is concerned with the quantization of energy and its effects on the interaction of matter and energy?

11 / 34

4. Which of the following statements is TRUE?

12 / 34

5. Which of the following statements about electrons within an atom is true?

13 / 34

6. Electrons, being fermions, adhere to which principle that prohibits two electrons from occupying the same quantum state?

14 / 34

7. Electrons absorbs energy in form of photons as they are accelerated

15 / 34

8. What is the relative mass of an electron compared to a proton?

16 / 34

9. What term is used to describe the lowest energy state that an electron can occupy within an atom?

17 / 34

10. What is the intrinsic angular momentum (spin) value of an electron?

18 / 34

11. Which of the following is not quantized?

 

19 / 34

12. Which field properties does an electron exhibit due to its charge and motion?

20 / 34

13. What is the electric charge of a positron?

21 / 34

1. What is the primary reason for the scattering of alpha particles in Rutherford's model?

22 / 34

2. What is the significance of alpha particle scattering experiments in Rutherford's model?

23 / 34

3. How are the electrons distributed in Thomson's model?

24 / 34

4. Arrange the following types of electromagnetic radiation in order of increasing wavelength

25 / 34

5. If the dimensions of the nucleus are small enough, what can happen to alpha particles passing very near the nucleus in Rutherford's model?

26 / 34

6. How do the oscillations of the electrical and magnetic components in electromagnetic waves relate to the direction of propagation?

27 / 34

7. In electromagnetic waves, how do the electrical and magnetic components oscillate?

28 / 34

8. In Rutherford's model, where is the positive charge concentrated?

29 / 34

9. What are electromagnetic waves?

30 / 34

10. Arrange the following types of electromagnetic radiation in order of increasing frequency:

31 / 34

11. In quantum mechanics, what role does a photon play in the electromagnetic field?

32 / 34

12. In Thomson's model, where are the negatively charged electrons located?

33 / 34

13. According to quantum mechanics, what is the alternate view of electromagnetic radiation (EMR)?

34 / 34

14. What is a photon?

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