PHY 103 EXAM CBT TEST

Ace/Undergragra March 6, 2023

0 46 1 minute read

Join Our Telegram Channel For Latest Updates click here
Join our WhatsApp TV For Latest Updates Click here

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace PHY 103 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions
Do not waste time on a question you don’t know
Move as fast as possible and starting with questions that don’t have calculation first to save time
Always crosscheck
Don’t be in a hurry to submit, you are not in a competition
Don’t be scared. Getting an A is easy
Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book
Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

FUOYE FRESHERS STREAM B GENERAL GRP

https://chat.whatsapp.com/DF9uJlVCfNIBv5PpK8zizy

To get latest school updates

https://wa.me/message/UCYVTYIVGGQNP1

I remain your favorite education blogger

Undergragra

473

Created on January 06, 2023 By

Ace/Undergragra

PHY 103

1 / 40

1. First law of thermodynamics deals with

A. Conservation of energy

B. Conservation of mass

C. Conservation of momentum

D. Conservation of pressure

2 / 40

2. Which among the following is an assumption of Hagen-Poiseuille equation?

A. Fluid is uniform

B. Fluid is compressible

C. Fluid is laminar

D. Fluid is turbulent

3 / 40

3. Compressible flow is a flow that deals with ______

A. Fluid geometry

B. Fluid pressure

C. Fluid density

D. Fluid temperature

4 / 40

4. __________ is the condition of a system at an instant of time.

A. Thermocycle

B. System

C. Process

D. State

5 / 40

5. Hooke's law is applicable within what limit?

A. Plastic limit

B. Fracture limit

C. Ultimate strength

D. Elastic limit

6 / 40

See also CPE 101 CBT Test

A. Ductile

B. Compressible

C. Brittle

D. Malleable

20 / 40

20. For an isolated system

A. Entropy

B. Neither the mass nor energy can transfer between the system and the surrounding

C. The Thermometer is always stagnant

D. There is no acceleration

21 / 40

21. A hydraulic press contains 0.25m^3 of oil find the decrease in the volume of the oil when it's subjected to a pressure increase (P' - P) = 1.6 x 10 ^7 Pa. The bulk Modulus of the oil is 5.0GigaPa

A. 0.0008

B. 0.008

C. 0.00008

D. 0.6796

22 / 40

22.

The equation for the average kinetic energy is_________

A. 0.5KT

B. 3.2KT

C. 1.5KT

D. 3.5KT

23 / 40

23. An object has a mass of 10kg and a length of 4m, given that the cross-sectional area of the object is 32.5m^2, Now calculate the density of the object

A. 7.077kg/m^3

B. 0.077kg/m^3

C. 0.0077kg/m^3

D. 0.77kg/m^3

24 / 40

24. Which of the laws of thermodynamics defines entropy

A. Second

B. First

C. Zeroth

D. Third

25 / 40

25.

A body weighs 0.3N in air, 0.25N when fully immersed in water and 0.27N when fully immersed in a liquid. Calculate its loss of weight in water

A. 0.05N

B. 0.6N

C. 0.003N

D. 1.3N

26 / 40

26. Mercury melts at ________

A. 0° - 4°C

B. 112°C

C. 404°C

D. -38.829°C

27 / 40

27. A uniform cylindrical wooden block floats in water with 1/3 of its height above the water level. In a liquid of a relative density 0.8, what fraction of its height will be above the liquid

A. 1/6v

B. 1/4v

C. 1/3v

D. 1/7v

28 / 40

28. What is the dimension of strain

A. M/L

B. L x L

C. M X L X T

D. It's dimensionless

29 / 40

29. _______ is the part of the universe, we choose to study

A. Surrounding

B. Isolated System

C. System

D. Thermodynamic cycle

30 / 40

30. The pressure at any given point of a non-moving fluid is called the ____________

A. Atmospheric Pressure

B. Hydrostatic Pressure

C. Differential Pressure

D. Guage Pressure

31 / 40

31. The SI unit of Surface tension is ______

A. Kg/cm

B. Pa

C. N/m

D. Nm

32 / 40

32. __________ is a pointer for the direction of energy transfer.

A. Thermodynamics

B. Thermocouple

C. Temperature

D. Weight

33 / 40

33. Which of the following is true?

A. Flow is turbulent both inside and outside of the boundary layer

B. Flow is laminar inside the boundary layer and turbulent outside

C. Flow is turbulent inside the boundary layer and laminar outside

D. Flow is laminar both inside and outside of the boundary layer

34 / 40

34. Which among the following is the formula for Gibbs free energy?

A. T∆S

B. H - T

C. H-T∆S

D. H - T

35 / 40

35. Bulk Modulus, Pressure, Force, Stress – Which one of these won't have the same unit as the others?

A. Force

B. Stress

C. Pressure

D. Bulk Modulus

36 / 40

36. A body weighs 0.3N in air, 0.25N when fully immersed in water and 0.27N when fully immersed in a liquid. Calculate its loss of weight in water

A. 0.003N

B. 0.05N

C. 1.3N

D. 0.6N

37 / 40

37. ________ is the evidence that matter is made up of atoms and particles that are in constant vibration

A. Brownian motion

B. Bernuolli principle

C. Accelerated motion

D. Special relativity

38 / 40

38. A student using a circular loop of wire and a pan of soapy water produces a bubble whose radius is 1mm. The surface tension of the soapy water is [a= 0.025N/m] determine the pressure difference between the inside and outside of the pan.

A. 100N/m

B. 1000N/m^2

C. 100N/m^2

D. 100N/m

39 / 40

39. ________ Law states that provided the elastic limit of an elastic material is not exceeded, the force applied is directly proportional to the extension

A. String law

B. Hooke’s law

C. Charles law

D. Law of extension

40 / 40

40. Which of the laws of thermodynamics defines entropy

A. First

B. Zeroth

C. Second

D. Third