technician a says that the tinnerman nuts used to hold the brake drum on should be reinstalled when the drum is replaced. technician b says that a drum should be removed inside a sealed vacuum enclosure or washed with water or solvent to prevent possible asbestos dust from being released into the air. which technician is correct?

Answers

Answer 1

Answer:

technician a and b are correct

Related Questions

at what pressure range does the technician valve off the vacuum pump when evacuating to a deep vacuum? a. 200 to 100 microns. b. 300 to 100 microns. c. 300 to 200 microns. d. 500 to 300 microns.

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The technician valve off the vacuum pump when evacuating to a deep vacuum 500 to 300 microns.

What is vacuum pump?
A vacuum pump is a piece of machinery that may force gas or air molecules into a sealed chamber to create a partial and low-pressure vacuum. A vacuum is a condition when the pressure inside the chamber is lower than the pressure outside the chamber or in nearby systems. This is distinct from an absolute vacuum, when there are no gas molecules and a pressure of 0 Pa. The force of the air pressing down on the earth, or atmospheric pressure, is one of the essential components of a vacuum pump. The weight of air molecules, which decreases at greater altitudes, produces this pressure. Machines, notably vacuum pumps, are significantly impacted by air pressure or atmospheric pressure.

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a concrete mix with a 3-in. slump, w/c ratio of 0.50, and sand with a fineness modulus of 2.4 contains 1700 lb/yd3 of coarse aggregate. compute the required weight of coarse aggregate per cubic yard.

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The weight of the coarse aggregate is 1247.63 kg/m³

How to calculate the weight?

Fineness modulus = 2.4

Bulk unit weight = 118 = 1890.63 kg/m3

Slump = 3inches = 76mm

Assume a 20mm maximum size of aggregate and non-air-entrained concrete, the approximate requirements for mixing water and air content for different workabilities and nominal maximum size of aggregate is illustrated.

The slump of 76mm, 20mm size of aggregate, water content is 200 kg/m3³.

The required cement content arrow = 200/0.5

= 400 kg/m³

Now, the dry bulk volume of coarse aggregate per unit volume of concrete. The value for 20mm aggregate, fineness modulus is 2.4, a bulk volume of dry rodded coarse aggregate is 0.66

Therefore, the weight of coarse aggregate will be:

= 0.66 x 1890.36

= 1247.63 kg/m³

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technician a says to use masking tape temporarily over the lining material to help prevent getting grease on the lining. technician b says that grease on the brake lining can cause the brakes to grab. which technician is correct?

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tech a says fuel line pressure may be relieved by disabling the fuel pump and running the engine until it stops. tech b says the only safe way to relieve fuel pressure is to open the fuel return line at a fitting away from the engine. who is correct?

Answers

Technician A states correctly as the fuel line pressure is relieved by disabling the fuel pump and operating the engine until it stops.

Relieving the fuel pressure from the engine is considered a vital mechanism. There are numerous methods that can be used to relieve fuel pressure. Disabling the fuel pump is one such method that is used to relieve fuel pressure on the vehicle engine. In this method, the fuel pump fuse is removed/disabled, and then the engine is started until it stalls. Therefore, we can say that technician A is correct.

However, the fuel pressure cannot be relieved by opening the fuel return line at a fitting away from the engine. So, technician B is incorrect who recommends the opening of the fuel return line to be fitted away from the engine in order to relieve fuel pressure.

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