Connect with us

ACADEMICS

LAGOS STATE UNIVERSITY (LASU) – List of Courses

Published

on

LAGOS STATE UNIVERSITY, OJO, LAGOS STATE – COURSES

LASU Courses are  listed below. The JAMB subject combination, subject requirements and combinations for each of the courses as well as other institutions that offer them can be found in the “COURSES” section. You can as well click on each course to view its info.

 

“LASU” – Programmes(courses):

  • ACCOUNTANCY/ACCOUNTING
  • AERONAUTIC AND ASTRONAUTIC ENGINEERING
  • AGRICULTURE
  • ARABIC STUDIES
  • BANKING AND FINANCE
  • BIOCHEMISTRY
  • BOTANY
  • BUSINESS ADMINISTRATION
  • BUSINESS EDUCATION
  • CHEMICAL AND POLYMER ENGINEERING
  • CHEMISTRY
  • CHRISTIAN RELIGIOUS STUDIES
  • COMPUTER SCIENCE
  • CURRICULUM STUDIES
  • DENTISTRY AND DENTAL SURGERY
  • DRAMA/DRAMATIC/PERFORMING ARTS
  • EARLY CHILDHOOD AND PRIMARY EDUCATION
  • ECONOMICS
  • EDUCATION ACCOUNTING
  • EDUCATION AND ARABIC
  • EDUCATION AND BIOLOGY
  • EDUCATION AND CHEMISTRY:
  • EDUCATION AND CHRISTIAN RELIGIOUS STUDIES
  • EDUCATION AND COMPUTER SCIENCE
  • EDUCATION AND ECONOMICS
  • EDUCATION AND ENGLISH LANGUAGE
  • EDUCATION AND FRENCH:
  • EDUCATION AND GEOGRAPHY
  • EDUCATION AND HISTORY:
  • EDUCATION AND ISLAMIC STUDIES:
  • EDUCATION AND MATHEMATICS
  • EDUCATION AND PHYSICS
  • EDUCATION AND POLITICAL SCIENCE
  • EDUCATION AND YORUBA
  • EDUCATION, LANGUAGE AND FRENCH
  • EDUCATIONAL FOUNDATIONS
  • EDUCATIONAL MANAGEMENT
  • ELECTRONICS AND COMPUTER ENGINEERING
  • ENGLISH LANGUAGE
  • FINE AND APPLIED ARTS:
  • FISHERIES
  • FRENCH
  • GEOGRAPHY AND PLANNING
  • GUIDANCE AND COUNSELLING
  • HEALTH EDUCATION
  • HISTORY AND INTERNATIONAL STUDIES
  • INDUSTRIAL RELATIONS AND PERSONNEL MANAGEMENT
  • INSURANCE
  • ISLAMIC STUDIES
  • LAW
  • LOCAL GOVERNMENT AND DEVELOPMENT STUDIES
  • MARKETING
  • MASS COMMUNICATION
  • MATHEMATICS
  • MECHANICAL ENGINEERING
  • MEDICINE AND SURGERY
  • MICROBIOLOGY
  • MUSIC
  • NURSING/NURSING SCIENCE
  • PEACE STUDIES
  • PHARMACOLOGY
  • PHYSICAL AND HEALTH EDUCATION
  • PHYSICS
  • PHYSIOLOGY
  • POLITICAL SCIENCE
  • PORTUGUESE/ENGLISH
  • PSYCHOLOGY
  • PUBLIC ADMINISTRATION
  • SOCIOLOGY
  • TEACHER EDUCATION SCIENCE:
  • TECHNOLOGICAL MANAGEMENT
  • TECHNOLOGY AND VOCATIONAL EDUCATION
  • TRANSPORT MANAGEMENT TECHNOLOGY
  • YORUBA AND COMMUNICATION ARTS
  • ZOOLOGY

Career & Business Strategist, Content creator, JAMB Officer and Academic Instructor. Owner/Founder - CAREERWIZZARD @careerwizzard.com

Advertisement
Comments

ACADEMICS

PHY 203 Quiz For OAU

Published

on

0%
8 votes, 4.8 avg
268
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. The loss due to ohmic resistance of the transformer windings

2 / 95

2. The collector current is determined by the _________

3 / 95

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

4 / 95

4. A hole can also be described as a _________

5 / 95

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

6 / 95

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

7 / 95

7. Calculate Ia, Ib and Ic

8 / 95

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

9 / 95

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

10 / 95

10. Which of this is true

11 / 95

11. What are the examples of passive elements?

12 / 95

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

13 / 95

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

14 / 95

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

15 / 95

15. A multiplier measures ………………, ………………….. and …………………

16 / 95

16. ________ converts alternating currents into direct currents

17 / 95

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

18 / 95

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

19 / 95

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

20 / 95

20. A capacitor stores charge and hence, electric energy

21 / 95

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

22 / 95

22. 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.

23 / 95

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

24 / 95

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

25 / 95

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

26 / 95

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

27 / 95

27. 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.

28 / 95

28. 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

29 / 95

29. 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.

30 / 95

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

31 / 95

31. 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

32 / 95

32. 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.

33 / 95

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

34 / 95

34. The transistor is a current __________ device.

35 / 95

35. A p-n junction is also known as

36 / 95

36. 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.

 

37 / 95

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

38 / 95

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

39 / 95

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

40 / 95

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

41 / 95

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

42 / 95

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

43 / 95

43. A transformer consists of two inductive coils namely;

44 / 95

44. Calculate the current flowing in the circuit

45 / 95

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

46 / 95

46. A inductor stores energy in its _________

47 / 95

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

48 / 95

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

49 / 95

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

50 / 95

50. The most versatile circuit configuration for transistors is the

51 / 95

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

52 / 95

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

53 / 95

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

54 / 95

54. What type of bonds exist in semiconductors

55 / 95

55. 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.

56 / 95

56. 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 ___________

57 / 95

57. No electrons can stay in the forbidden gap because

58 / 95

58. Calculate Rth, Vth, and I5

59 / 95

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

60 / 95

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

61 / 95

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

62 / 95

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

63 / 95

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

64 / 95

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

65 / 95

65.

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

66 / 95

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

67 / 95

67. Copper loss is usually larger than other losses

68 / 95

68. 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

69 / 95

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

70 / 95

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

71 / 95

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

72 / 95

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

73 / 95

73. Calculate the equivalent resistance

74 / 95

74. 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)

75 / 95

75. 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

76 / 95

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

77 / 95

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

78 / 95

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

79 / 95

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

80 / 95

80. 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.

81 / 95

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

82 / 95

82. 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

83 / 95

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

84 / 95

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

85 / 95

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

86 / 95

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

87 / 95

87. Voltmeter draws …………………… current

88 / 95

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

89 / 95

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

90 / 95

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

91 / 95

91. Inductors are very common in high-frequency circuit

92 / 95

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

93 / 95

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

94 / 95

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

95 / 95

95. The core in a transformer provides ?

Your score is

The average score is 53%

0%

You can give feedback or questions to the quiz.

Thank you. Feedbacks makes us better!

Continue Reading

ACADEMICS

Quiz for CSC 201

Published

on

/40
14 votes, 4.4 avg
916

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

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

“`grade1 = 80“`

“`grade2 = 90“`

“`average = (grade1 + grade2) / 2“`

2 / 40

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

“`X = 2+9*((3*12)-8)/10“`

3 / 40

Is Python case sensitive when dealing with identifiers?

4 / 40

Which type of Programming does Python support?

5 / 40

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

6 / 40

The correct sequence of the history of modern era is

7 / 40

Machines developed in transistor era include the following except

8 / 40

The outcome of a programming activity is a _________

9 / 40

The following are python reserved words excerpt

10 / 40

What is the value of the following expression?

“`float(22//3+3/3)“`

11 / 40

Which of the following is an invalid variable?

12 / 40

Operating Systems includes the following except

13 / 40

The following is true about python except

14 / 40

‘Bit’ stands for

15 / 40

A computer software comprises of ___________ software & ___________ software

16 / 40

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

17 / 40

Which of the following is an invalid statement?

18 / 40

Application software includes the following except

19 / 40

Who developed Python Programming Language?

20 / 40

Is Python code compiled or interpreted?

21 / 40

Which of the following variable naming is correct

22 / 40

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

23 / 40

The expression

“`2**2**3“` is equal to “`(2**2)**3“`

24 / 40

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

25 / 40

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

26 / 40

What will be the output of the following Python expression?

“`round(4.576)“`

27 / 40

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

28 / 40

What are the values of the following Python expressions?

“` 2**(3**2)“`

“` (2**3)**2“`

“` 2**3**2“`

29 / 40

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

“` +, -, **, %, /, <<, >>, |“`

30 / 40

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

31 / 40

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

32 / 40

What is the order of precedence in python?

33 / 40

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

34 / 40

What are the two main types of functions in Python?

35 / 40

The following are program elements except

36 / 40

Machines developed in mechanical era include the following except

37 / 40

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

38 / 40

Python was created in what year

39 / 40

In flow charts, a terminal is represented with what shape

40 / 40

The following are high-level languages except

Your score is

The average score is 66%

0%

Thank you for your feedback!

Continue Reading

ACADEMICS

PHY 205 Quiz

Published

on

0%
0 votes, 0 avg
48

OAU PHY 205 Quiz

PHY 205

1 / 34

1. What is a photon?

2 / 34

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

3 / 34

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

4 / 34

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

5 / 34

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

6 / 34

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

7 / 34

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

8 / 34

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

9 / 34

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

10 / 34

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

11 / 34

11. What are electromagnetic waves?

12 / 34

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

13 / 34

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

14 / 34

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

15 / 34

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

16 / 34

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

17 / 34

3. Which of the following is not quantized?

 

18 / 34

4. Which of the following statements is TRUE?

19 / 34

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

20 / 34

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

21 / 34

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

22 / 34

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

23 / 34

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

24 / 34

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

25 / 34

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

26 / 34

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

27 / 34

13. What is the electric charge of a positron?

28 / 34

1. 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)

29 / 34

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

30 / 34

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

31 / 34

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

32 / 34

5. What is thermionic emission?

33 / 34

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

34 / 34

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

Your score is

The average score is 66%

0%

Continue Reading

ACADEMICS

OAU PHY 203 Class Notes

Published

on

This PDF is the class notes for OAU  PHY 203 during the 2022/2023 session.




It encompasses topics ranging from circuit theory and network theorems to Thevenin’s and Norton’s theorems, progressing further into AC circuits, transformers, physics of active devices, semiconductors, and more.



I will continually update this file as we proceed through the classes. Thank you.

RECOMMENDED:

Continue Reading

Trending

Scroll Up
..

9jabaz.