VIP ELEMENTS 1

Question 1

One hundred twenty five percent of theoretical air
was supplied for combustion. What is the equivalent
excess air equal to?

Answer 1

25%

Question 2

The size of a reciprocating pump is stamped on the
builder’s plate as 3 x 4 x 6. The diameter of the
liquid cylinder is:

Answer 2

4 inches

Question 3

Ice cubes were added to a glass of water and
stirred. Moisture starts to condense at the outer
surface of the glass, what is the temperature of
the moisture at the outer surface?

Answer 3

Dew point temperature

Question 4

A steam generator produces 1007 Btu per lbm of heat
at 100 psia from 14.7 psia of saturated liquid. If
the heat input supplied is 800 Btu per Ibm, which
of the following is true for the device?

A. The device cannot work because the pressure is
greater than zero.
B. The device can work because output is greater
than input.
C. The device violates the first law of
thermodynamics because output is greater than
input.
D.
The
device violates the second law of
thermodynamics because input is less than output.

Answer 4

C

Question 5

If cavitation will occur, the available NPSH is
insufficient. Which of the following is a remedy
to overcome cavitation?

Answer 5

increase the available NPSH

Question 6

A boiler testing method that is used to verify the
microstructure of the boiler tubes using optical
microscopes.

Answer 6

metallurgical replication

Question 7

It is important to take some moisture from the air
to dehumidify it and the relative humidity reaches
high levels. To do this, it requires cooling the
air

Answer 7

below its dew point temperature.

Question 8

Freon flows through an expansion valve, select the
best statement:

A. the temperature increases
B. the pressure remains constant
C. the internal energy remains constant
D. the enthalpy remains constant

Answer 8

D

Question 9

Class of fire involving combustible metals such as magnesium, sodium, titanium and other similar metals.

Answer 9

Class D

Question 10

Cooling air in intercoolers between compression
stages in a multi-stage air compressor.

Answer 10

keeps the moisture in the air from evaporating

Question 11

For comfort cooling, the amount of air recirculated and only enough outside air is introduced to provide for ventilation requirements, approximately from _______ cu ft per minute per
occupant.

Answer 11

10 to 15 cu. ft per minute per occupant.

Question 12

Suitable means shall be provided for the collection
and disposal of condensate from the equipment. The
condensate drain shall be at least _____ nominal
pipe size and shall be copper, galvanized steel,
or other corrosion-resistant material

Answer 12

19 mm

Question 13

Fire code of the Philippines:

Answer 13

PD No. 1185

Question 14

National Building Code of the Philippines

Answer 14

RA 6541

Question 15

Occupational, Safety, and Health

Answer 15

RA 11058

Question 16

Clean water act of the Philippines

Answer 16

RA 9275

Question 17

Flow test and Hydrants Standards

Answer 17

NFPA 291

Question 18

In industrial plant practice, what is the type of
conveyor commonly used for conveying bulk materials
over long distances because they are least
expensive and most versatile?

Answer 18

Belt Conveyor

Question 19

What is an automatic pressure-relieving device
actuated by the static pressure upstream of such
device, characterized by the full opening pop
action? It is mainly used for gas or vapor service.

Answer 19

Safety Valve

Question 20

Per Section 1302 Mechanical Regulations of the
National Building Code of the Philippines PD1096
2005, BOILERS may be located inside buildings but
the minimum distance from any wall shall be at
least _______ meters.

Answer 20

1.5 m

Question 21

What type of sprinkler system employs open
sprinklers attached to a piping system connected
to a water supply through a valve that is opened
by the operation of a detection system in the same
area as the sprinkler system. When activated, water
flows and discharges to all sprinklers at the same
time.

Answer 21

Deluge system

Question 22

The Philippine Clean Air Act of 1999 (RA 8749)
specifies the limit of Sox (as SO2) that can be
discharge to the environment, in mg/Nm3, as ______.

Answer 22

<700

Question 23

You are supervising the installation of a steam
driven reciprocating pump. The pump’s air chamber
is missing and you have to replace it with one with
several salvaged ones. The salvaged air chamber
selected should have a volume equal to, most
nearly,:
A. Half of the position displacement of the pump
B. 1 ½ times the position displacement of the pump
C. 2 times the piston displacement of the pump
D. 2 ½ times the piston displacement of the pump

Answer 23

D

Question 24

In accordance with the air pollution control code,
no person shall cause or permit the emission of air
contaminants from a boiler with a capacity of 500
million BTU sulfur dioxide content of more than:

Answer 24

200 ppm (parts per million), 10% excess air

Question 25

During the emergency operation of the boiler, when there is no water in the gauge glass and steam comes out of the bottom trycock, the water level cannot be determined. What preventive measure the operator does to save the boiler

Answer 25

shutdown the boiler and do not add water

Question 26

As a general rule, the cooling water side of the condenser should be schedule for inspection for every:

Answer 26

3 months