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pec canvas > midterm exam questions > Flashcards

midterm exam questions Flashcards

1
Q

What is the smallest known building block of matter?

A

quarks

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2
Q

There are 6 moles of carbon dioxide, how many particles are present in this compound?

A

36.138x10^23

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3
Q

It refers to a positive charge ions?

A

cation

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4
Q

Which of the following describes a chemical change?

A

Tarnishing silver

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5
Q

Which among the crystal system has the least symmetry due to its unequal unit cell dimensions and angles?

A

triclinic

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6
Q

How many zeroes in the measurement 0.00020040 are significant?

A

three

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7
Q

What define the isotopes of the materials

A

neutron

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8
Q

A state of matter in gaseous super fluid form that usually occurs at ultra low temperature?

A

Bose- Einstein condesate

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9
Q

How many moles of are present in 44.8L of at STP?

A

2

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10
Q

Calculate the mass of the oxygen that reacts with 1.24 g of methane to form 3.41 g of Carbon dioxide and 2.79 g of water?

A
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11
Q

What is the mass of 60 kg astronaut in moon?

A

60 kg

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12
Q

A 2 kilograms body is held 4 meters above the ground. What is the approximate speed of the mass when hitting the ground?

A

8.86m/s

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13
Q

A 10 kg object stay at rest at the height of 100 ft, what is the velocity at the distance 50 ft above the ground?

A

17.3m/s

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14
Q

An iron steam pipe 200 ft long at 0 C, what will be the new length of this pipe when heated to 100 C with the coefficient of thermal expansion of 10 x 10 -6 ft/ C?

A

200.2

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15
Q

What is the net force of attraction between two masses separated by 50 cm, if one mass is 10% of the 500 kg body?

A

6.67 micro N

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16
Q

If a 10 kg copper fall at the height of 100 m, calculate the amount of heat will form?

A

2300kcal

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17
Q

Calculate the density of 5 N iron block with a volume of 200 cm^3

A

2549 kg/m^3

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18
Q

The process in which white light are separated in different colors when beam thru prism?

A

dispersion

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19
Q

The law that states, “If the resultant force acting on a particle is zero, the particle will remain at rest (if originally at rest) or will move with constant speed in a straight line (if originally in motion),” is

A

Newton’s 1st Law

20
Q

How much or what fine is required for any person
who shall violate any provision or any rules,
regulations, the Code of Ethics and the Code of
Technical Standards of Practice promulgated under
RA 9292?

A

Not less than Php100,000.00 nor more than Php 1M or by imprisonment of not less than 6 months nor more than 6 years, or both, in the discretion of the court

21
Q

According to section 43, RA 9292 shall take effect
__________ following its full publication in the
__________ or any newspaper of general
circulation.

A

15 days, Official Gazette

22
Q

Date of approval of RA 9292

A

April 17, 2004

23
Q

Any person who shall violate any provision of RA
9292 or any rules, regulations, the Code of Ethics
and the Code of Technical Standards of Practice is
stated in section _________.

A

35

24
Q

The members of the Board shall hold office for a
term of __________ from date of appointment or
until their successors shall have been appointed
and qualified and may be re-appointed once for
another term

A

3 years

25
Q

All submittals/documents shall be accompanied by a
certification from __________ registered PECEs
vouching for the integrity, technical capability and
good moral character of the applicant.

A

at least 3

26
Q

Within __________ years after the effectivity of RA
9292, the Board shall issue Certificate of
Registration and Professional Identification Cards
without examination to all applicants for
registration as Electronics Technicians who comply
to all the requirements stated in section 20.

A

5

27
Q

Each member of the Board shall take the/a

__________ prior to the assumption of office.

A

proper oath

28
Q

The Board and the __________ shall correct and

rate the licensure examination papers

A

Commission

29
Q

There are __________ Articles and __________

sections in the RA 9292.

A

8, 43

30
Q

A simple beam 20 m long carries a concentrated load of 100 kN at the midspan, what is the maximum moment of the beam?

A

500kn

31
Q

Hinge has how many force component?

A

2

32
Q

What are the components of the force the hinge exerts on the beam?

A

Hx and Hy

33
Q

The coefficient of area expansion is ______ times the coefficient of linear expansion.

A

2

34
Q

There are two forces 100 N each. One force acts at 2 units upward at the right of origin and the other force is at 2 units acting rightward at the top of origin. The moment of force at the origin will be?

A

0 N-m

35
Q

Given an identical forces, one is due north and the other is due east. The moment with respect to origin will be?

A

0

36
Q

Where is the position of distributed triangular loading

A

L/3

37
Q

Study of objects in motions without reference to the forces which cause the motion.

A

kinematics

38
Q

The point in the stress-strain diagram wherein the strain deviates from the proportionality between the stress and strain

A

yield point

39
Q

What is the ratio of the maximum load in tension test to the regional cross-sectional area of the test bar?

A

tensile strength

40
Q

Study of rigid bodies at rest

A

statics

41
Q

In a triclinic crystal system, the
___ axis should be longer
than the ___ axis.

A

b, a

42
Q

is a special case of projectile motion where the initial velocity is zero.

A

Free fall

43
Q

The number of particles in a mol of a substance is the

A

Avogadro Constant

44
Q

Avogadro Constant =

A

6.02 x 1023.

45
Q

how many liters is one mole

A

22.4

46
Q

1 cal is equal to how many joules

A

4.2J

47
Q

1BTU is equal to how many cal

A

252 cal

pec canvas (6 decks)

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