Skip to main content

Mechanical Engineering Board Exam Questions Part 4

Source: Machinery's Handbook
Topic: Materials and Processes

1.______is a number indicating how many times a certain volume of a material is heavier than an equal volume of water
a.specific ratio
c.Specific gravity
d.Avogadro's Number

2._______an instrument for determining the density of liquids, provided with graduations made to an arbitrary scale
c.weighing scale

3. Stainless steels generally contain at least _______ chromium, with or without other elements

4.______ is type of stainless steel that is nonmagnetic in the annealed condition, although some may become slightly magnetic after cold working

5. ______ grades of stainless steel are always magnetic and contain chromium but no nickel.

6. _______ grades of stainless steel are magnetic and can be hardened by quenching and tempering.

7.The steel is heated to a temperature above the critical range, after which it is cooled in still air to produce a generally fine pearlite structure. The purpose is to promote
uniformity of structure and properties after a hot-working operation such as forging or extrusion.
a. Stress Relieving
b. Spheroidize Annealing
c. Annealing
d. Normalizing

8. This process reduces internal stresses, caused by machining, cold working, or welding, by heating the steel to a temperature below the critical range and holding it there long enough to equalize the temperature throughout the piece.
a. Stress Relieving
b. Spheroidize Annealing
c. Annealing
d. Normalizing

9. This is a special form of annealing that requires prolonged heating at an appropriate temperature followed by slow cooling in order to produce globular carbides, a structure desirable for machining, cold forming, or cold drawing, or for the effect it will have on subsequent heat treatment.
a. Stress Relieving
b. Spheroidize Annealing
c. Annealing
d. Normalizing

10. The steel is heated to a temperature above or within the critical range, then cooled at a predetermined slow rate (usually in a furnace) to produce a coarse pearlite structure. This treatment is used to soften the steel for improved machinability; to improve or restore ductility for subsequent forming operations; or to eliminate the residual stresses and microstructural effects of cold working.
a. Stress Relieving
b. Spheroidize Annealing
c. Annealing
d. Normalizing
Reblog this post [with Zemanta]


  1. sir, do have any access about the type of calculator that we used? any change from prc?

  2. I'm not aware of any change. I still recommend Casio FX 991MS.
    Anyway, I'll check. Please give me one week to verify that info.

  3. here's the link to the updated list of ALLOWED calculators by PRC.

  4. Thanks sir, more power. . .Godbless you!

  5. Can I use my iPhone calculator?


Post a Comment

Popular posts from this blog

BOARD EXAM TIP: Which Review Center?

First of all, I would like to apologize for a long time I haven't posted anything but introduction. The reason for that is I'm busy optimizing the design of this site. I'm hoping that the make over is good. Anyway, I would like to dedicate this article to those who are going to take/retake the board exam this coming October. My sincere wish that you bring out the best among yourselves and may the deserving ones pass the exam.

Going back to the One-Million-Peso worth question: "Which review center should I enroll?", I would like to answer that in the most unbiased way I can. Of course, I'm only human and I had also my preferences but I will try my best to hide it.

To start with I will enumerate some of the prominent review centers that offer board exam reviews for mechanical engineering in the Philippines.

1. Alcorcon (Cebu & Manila)
2. Excel (Cebu & Manila)
3. Linx Engineering (Manila)
4. MERIT (Manila)
5. PRIME (Cebu)
6. RLB's CDTC (Manila)

PAST MECHANICAL BOARD EXAM QUESTION: Machine Design Set-1 (solutions and answers)

The following are the solutions and answers to MODIFIED PAST MECHANICAL BOARD EXAM QUESTION: Machine Design Set-1 posted on this blog last Saturday, November 14, 2009.

Again, I want to stress out that most of the questions here are modified from its original form for the purpose of improving the question.

Past Mechanical Engineering Board Exam Question Number 1
A 4 inches diameter short shaft carrying 2 pulleys close to the bearings transmits how much horsepower if the shaft makes 120 rpm.

A.200HP               B. 199 HP

C.198 HP              D. 202 HP

P = (D3N )/38 -- for mula for short shafts from PSME code

P = (4)3(120)/38

P= 202 HP

Past Mechanical Engineering Board Exam Question Number 2
An instrument that measures the hardness of the work piece in terms of elasticity.

a. Durometer

b. Scleroscope

c. Mohs's Scale

d. Brinell Tester

Source: Machinery’s Handbook


Here are the solutions to board problems given at Power Subject Set-1. If you do not understand anything, feel free to write a comment voicing out your concern. I'm still looking for better ways to present my solution. I still don't know how to present equations and mathematical symbols with blogger. Please bear with me.

1. An automobile tire is inflated to 32psig pressure at 50 degree F. After being driven, the temperature rises to 75 degree F. Determine the final gage pressure assuming the volume remains constant. (Electrical Engineering Board Exam Problem)

Since volume is constant, use Charles’ Law on constant volume processes.
Note: P and T should be absolute.

(32+14.7)/ (50+460) =P2/ (75+460)

P2=48.99 psia

Converting back to gage pressure,


P2g=34.29 psig

2. Four hundred cubic centimeters of gas at a pressure of 740 mmHg absolute and temperature of 18 degree C undergoes a process until the pressure and temperature becomes 760 mmHg abso…