Quiz Review 5; Trades & Technology - Industrial And Skilled Trade

Explain the difference between variable and attribute data.

When selecting jobs to be analyzed, you should be guided by the following factors including ______.

¿Cuál de los siguientes tipos de materiales en láminas se usa en aplicaciones de alto desgaste como formas para concreto, armarios y mostradores?

4

What is one advantage and one disadvantage of frequency control?

5

When doing a cost analysis, it's important to identify the _____.

6

Since the Earth's crust is cooler than the air during the summer, it can be used to accept air conditioning heat loads.

7

In the aligned method of dimensioning, all dimensions are read from the bottom of the page.

8

Sometimes the ________ is called an actuator/operator

9

The voltage drop of the zener diode is ____________________.

10

In a DX system operating normally, the refrigerant leaving the evaporator should be _____.

11

When the percentage reading increases during opacity testing of diesel engine exhaust gas, what does this indicate?

12

The movement of a fluid in straight, parallel flow paths is called _____

13

Which component allows vertical movement of a structure without creating additional load stress?

14

Which of the following motors provides constant speed from no-load conditions to full-load conditions?

15

A plumber is installing a valve on a water supply line that will frequently remain completely open. The best

16

<img src="https://sciemce.com/files/4/ppg__cognero__UNIT_53_Introduction_to_Triangles__media__6b45fefb-247f-41eb-9a22-31968774d947.PNG" style="vertical-align: 0px;" width="155px" height="173px" /> The triangle in the accompanying figure is ____.

17

When placing the packing rings in the stuffing box seal, the cuts on the rings must be ____ to avoid excessive leaking.

18

La corriente continua que puede transportar un disyuntor sin superar una temperatura específica se denomina:

19

Keep a fire extinguisher at hand whenever using equipment powered by _____.

20

What is the function of the power supply?

21

One activity that occurs during the clearing phase of a BC implementation is scheduling a move back to the primary site.

22

The heaters located near the refrigerator door to keep the cabinet from sweating are called the ____ heaters.

23

When the LED on a smart switch flashes, what does that tell the operator?

24

The private organization that does not actually prepare standards, but instead adopts standards that it

25

During welding preparations, what should be set up around the welding area?

26

Which of the following would NOT cause a low voltage fault?

27

Which of the following tools and supplies would you need to install a food waste grinder?

28

v

29

Manual control may be accomplished by simply connecting a switch in series with the motor.

30

Which of the following defects could result in an undercharged battery?

31

An R-22 system has a 28-ft lift and a 7 psi pressure drop in the liquid line due to vertical lift. If the liquid leaves the condenser at 244 psi, what is the pressure at the top of the vertical lift?

32

Knock-down walk-in coolers are constructed of interlocking panels from ____ thick.

33

(a) Both cleavage and twinning in iron are favored by increasing the strain rate. Rationalize this statement. (b) Describe the development of a cup‐and‐cone fracture in a tensile specimen.

Solution
Both fracture and twinning have effective stress levels which must be exceeded in order for them to occur. These stress levels are normally lower than the stress required for slip. When slip occurs, it tends to relax the stress and keep it from reaching the fracture stress or the stress required to form twins. On the other hand, the slip process is aided by thermal activation. In other words, the applied stress is assisted by the thermal energy in overcoming obstacles that impede the motion of dislocations on their slip planes. At high strain rates, the stress needed to make the metal deform has to increase because the time that a dislocation waits at an obstacle is reduced, and the thermal contribution to the energy needed to overcome the obstacles is less. In simple words, increasing the strain rate increases the flow stress for slip. This increase in the stress level favors twinning and fracture.

34

Referring to the following figure, an indication of low engine oil pressure could be caused by which of the following:<img width="354" height="716" align="bottom" src="https://sciemce.com/files/3/ppg__examview__bell_mdtee2e_tb_images__Chapter_12_mc007-1.jpg" border="0">

35

A ____ may oversee the actual work for the engineer by providing the engineer with progress reports as well as chemical, physical, and mechanical test results.

36

_______________ is push or pull effort.

37

Too much air across the evaporator coil (moving too quickly) usually results in _____.

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Quiz Review 5; Trades & Technology - Industrial And Skilled Trade

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