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Confirm your admission status now on JAMB CAPS

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The JAMB CAPS for the 2022/2023 admission exercise is now active. Candidates can now monitor their admission status and quickly know when they have been offered admission. Once a candidate has been offered admission on JAMB CAPS, such a candidate is required to do either two things; to accept the admission or reject it.

Schools have already started uploading their Admission Lists on the JAMB Portal. We, therefore, advise candidates to closely monitor their admission status on JAMB CAPS so as to do the needful as soon as possible.





Some schools may not publish the list of admitted candidates on their own portal or notice board. So for candidates that applied for admission to such schools, the only way to know when they have been offered admission is to check their admission status on JAMB CAPS.

How To Check Admission Status on JAMB CAPS:

  • Visit: https://www.jamb.gov.ng/EfacilityLogin and log in with your registered email address and password to access your dashboard
  • Click on ‘Check Admission Status,
  • Click on ‘Access my CAPS’
  • Click on ‘Admission Status’ to see if you have been offered admission.
  • If you have been admitted you will get a response with your Photo Image being displayed and a text Congratulating you on your admission offer, But if you are not offered any admission yet you will get a text response with “Sorry No Admission has been Given Yet
  • If you have been offered admission, you can proceed to ACCEPT OR REJECT ADMISSION

Successfully admitted candidates are advised to ensure that they indicate the acceptance or rejection of admission online and timely to enable the processing of their admission.

It is important to note also that candidates who have been offered admission are to print their admission letter after accepting the admission, as they will likely need this during clearance and registration in the school where they have been admitted.


Note: If you are using a phone, you may not see the option to check Admission Status on CAPS, Most phone users may only see the welcome message. You are to use the desktop mode to view the complete page. This is why the chrome browser is recommended if you are using a phone. All you need to do is go to the Chrome option and choose request desktop site for the complete page to display.

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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 galvanometer measures and detects extremely small currents both in ………………… and ………………………

2 / 95

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

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

5 / 95

5. Which of this is true

6 / 95

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

7 / 95

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

8 / 95

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

9 / 95

9. 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.

10 / 95

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

11 / 95

11. Calculate Rth, Vth, and I5

12 / 95

12. 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

13 / 95

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

14 / 95

14. Inductors are very common in high-frequency circuit

15 / 95

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

16 / 95

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

17 / 95

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

18 / 95

18. Voltmeter draws …………………… current

19 / 95

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

20 / 95

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

21 / 95

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

22 / 95

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

23 / 95

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

24 / 95

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

25 / 95

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

26 / 95

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

27 / 95

27. 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.

 

28 / 95

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

29 / 95

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

30 / 95

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

31 / 95

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

32 / 95

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

33 / 95

33. 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

34 / 95

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

35 / 95

35. What type of bonds exist in semiconductors

36 / 95

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

37 / 95

37. What are the examples of passive elements?

38 / 95

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

39 / 95

39. 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

40 / 95

40. ________ converts alternating currents into direct currents

41 / 95

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

42 / 95

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

43 / 95

43. 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)

44 / 95

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

45 / 95

45. The core in a transformer provides ?

46 / 95

46. 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.

47 / 95

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

48 / 95

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

49 / 95

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

50 / 95

50. A transformer consists of two inductive coils namely;

51 / 95

51. 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.

52 / 95

52. 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

53 / 95

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

54 / 95

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

55 / 95

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

56 / 95

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

57 / 95

57. 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.

58 / 95

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

59 / 95

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

60 / 95

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

61 / 95

61. The most versatile circuit configuration for transistors is the

62 / 95

62. Calculate the equivalent resistance

63 / 95

63. The transistor is a current __________ device.

64 / 95

64.

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

65 / 95

65. 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

66 / 95

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

67 / 95

67. 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 ___________

68 / 95

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

69 / 95

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

70 / 95

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

71 / 95

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

72 / 95

72. 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.

73 / 95

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

74 / 95

74. The collector current is determined by the _________

75 / 95

75. A inductor stores energy in its _________

76 / 95

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

77 / 95

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

78 / 95

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

79 / 95

79. Copper loss is usually larger than other losses

80 / 95

80. No electrons can stay in the forbidden gap because

81 / 95

81. A capacitor stores charge and hence, electric energy

82 / 95

82. 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.

83 / 95

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

84 / 95

84. A multiplier measures ………………, ………………….. and …………………

85 / 95

85. A p-n junction is also known as

86 / 95

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

87 / 95

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

88 / 95

88. Calculate the current flowing in the circuit

89 / 95

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

90 / 95

90. A hole can also be described as a _________

91 / 95

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

92 / 95

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

93 / 95

93. Calculate Ia, Ib and Ic

94 / 95

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

95 / 95

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

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ACADEMICS

Quiz for CSC 201

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14 votes, 4.4 avg
882

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 order of precedence in python?

2 / 40

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

“`grade1 = 80“`

“`grade2 = 90“`

“`average = (grade1 + grade2) / 2“`

3 / 40

Machines developed in transistor era include the following except

4 / 40

Application software includes the following except

5 / 40

Which of the following is an invalid variable?

6 / 40

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

7 / 40

What are the two main types of functions in Python?

8 / 40

The outcome of a programming activity is a _________

9 / 40

A computer software comprises of ___________ software & ___________ software

10 / 40

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

11 / 40

Machines developed in mechanical era include the following except

12 / 40

Which of the following is an invalid statement?

13 / 40

The correct sequence of the history of modern era is

14 / 40

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

“`X = 2+9*((3*12)-8)/10“`

15 / 40

What is the value of the following expression?

“`float(22//3+3/3)“`

16 / 40

The following are high-level languages except

17 / 40

Is Python case sensitive when dealing with identifiers?

18 / 40

The following are python reserved words excerpt

19 / 40

Operating Systems includes the following except

20 / 40

What are the values of the following Python expressions?

“` 2**(3**2)“`

“` (2**3)**2“`

“` 2**3**2“`

21 / 40

What will be the output of the following Python expression?

“`round(4.576)“`

22 / 40

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

23 / 40

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

24 / 40

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

25 / 40

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

26 / 40

Is Python code compiled or interpreted?

27 / 40

Which type of Programming does Python support?

28 / 40

The expression

“`2**2**3“` is equal to “`(2**2)**3“`

29 / 40

Who developed Python Programming Language?

30 / 40

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

31 / 40

The following are program elements except

32 / 40

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

33 / 40

Python was created in what year

34 / 40

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

35 / 40

Which of the following variable naming is correct

36 / 40

In flow charts, a terminal is represented with what shape

37 / 40

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

“` +, -, **, %, /, <<, >>, |“`

38 / 40

The following is true about python except

39 / 40

‘Bit’ stands for

40 / 40

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

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ACADEMICS

PHY 205 Quiz

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OAU PHY 205 Quiz

PHY 205

1 / 34

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

2 / 34

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

3 / 34

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

4 / 34

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

5 / 34

5. What is a photon?

6 / 34

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

7 / 34

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

8 / 34

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

9 / 34

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

10 / 34

10. What are electromagnetic waves?

11 / 34

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

12 / 34

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

13 / 34

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

14 / 34

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

15 / 34

1. What is thermionic emission?

16 / 34

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

17 / 34

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

18 / 34

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

19 / 34

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

20 / 34

6. 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)

21 / 34

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

22 / 34

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

23 / 34

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

24 / 34

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

25 / 34

4. What is the electric charge of a positron?

26 / 34

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

27 / 34

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

28 / 34

7. Which of the following statements is TRUE?

29 / 34

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

30 / 34

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

31 / 34

10. Which of the following is not quantized?

 

32 / 34

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

33 / 34

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

34 / 34

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

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ACADEMICS

OAU PHY 203 Class Notes

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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.

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