consider that one diode in the bridge rectifier fails shorted. explain how the normal circuit operation changes. does some element overload? does the output change? g

The result to the 24v secondary on a transformer with a 208/230v dual-rated primary when it is wired for 230v but installed on a 208v system is 26.538V.

What is transformer?

A transformer is a passive component that transmits electrical energy from one circuit to another, or from many circuits. A changing current in any of the transformer's coils causes a changing magnetic flux in the core, which induces a changing electromotive force (EMF) across any additional coils coiled around the same core. Without a metallic (conductive) connection between the two circuits, electrical energy can be exchanged between separate coils.

given,

transformer rating = 208/230V       ∴208=secondary, 230= primary

given, primary rated voltage 230V but installed on 208V system

∴ Primary voltage ratings V₁=208V

Hence, Secondary voltage rating V₂ =(208×208)/230V

given, voltage on secondary = 24V

Voltage on primary = 24×V₁/V₂

=24×(208/(208×208)/230))

=24×(230/208)

=26.538V

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The bandwidth of this pulsed-wave transducer is calculated to be 9 MHz if the lowest frequency in the pulse is 3 MHz and the highest is 12 MHz.

Bandwidth is a term used related to frequency, which represents the range of frequencies occupied by a modulated radio-frequency signal which in this case is a pulsed-wave transducer.

It is usually given in hertz (Hz) or megahertz (MHz). It can also be given as a percentage of the radio frequency.

In other words, bandwidth refers to the difference between the highest frequency and the lowest frequency found in a pulse. Therefore;

bandwidth = highest frequency - lowest frequency

Substituting the values of the given highest and lowest frequency in this equation;

bandwidth = 12MHz - 3MHz

bandwidth = 9MHz

Therefore, the bandwidth of this pulsed-wave transducer is calculated to be 9MHz.

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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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The amount of work done by steady flow devices varies with the particular gas volume. The kinetic energy of gas particles decreases during cooling.

When the gas is subjected to intermediate cooling during compression, the gas specific volume is reduced, which lowers the compressor's power consumption. Compression is less adiabatic and more isothermal because the compressed gas must be cooled between stages since compression produces heat. The system's thermodynamic cycle's cold sink temperature is lowered by cooling the compressor coils. By increasing the temperature difference between the heat source and the cold sink, this improves efficiency.

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When technician A says that the PCV system should create a slight pressure in the crankcase at idle and Technician B says that the PCV system should create a slight vacuum in the crankcase at 2,500 RPM. The correct technician is Technician B.

It is to be noted that the PCV controls the pressure used to clear blow-by gases from the crankcase. The pressure-regulating valve lowers the vacuum effect in the crankcase by directing away the blow-by gases. This keeps the engine seals from being damaged (which could be blown out if the pressure gets too high).

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Full Question:

Technician A says that the PCV system should create a slight pressure in the crankcase at idle. Technician B says that the PCV system should create a slight vacuum in the crankcase at 2,500 rpm. Which technician is correct?

A) technician A

B) technician B

C) both technicians A and B

D) neither technicians A nor B

Answer:

throw it out

Explanation:

if it need to be discareded at 11.420 and its already at 11.362 its no longer in the guidlines for operation, by refinishing your taking away material.

The system must satisfy the constraints of the problem domain as well as the standards of the delivered system.

What is delivered system?
A courier is a business or individual who transports a package from one location to another. FedEx, Parcel Monkey, and Hermes Group are a few well-known examples. The Royal Mail is somewhat of an anomaly, as are the majority of delivered system. In order to provide more specialised or regional services, deliver multiple shipments, and relieve sellers of obligation, courier delivery services are frequently utilised for e-commerce fulfilment. While larger firms may have contracts using courier services for cost-effective mass delivery, smaller enterprises, like independent merchants, are more likely to rely on public services like the Royal Mail.

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Answer:

Inside micrometer

Explanation:

If the microphone produces a voltage of 2mv and has an internal resistance of 300 ohm, the amplifier output voltage would be 75mv.

What is voltage?

Voltage is the difference in electric potential between two points, often known as electric pressure, electric tension, or (electric) potential difference. It refers to the labour required per unit of charge to move a test charge between two places in a static electric field. The derived unit for voltage in the International System of Units is called volt. Work per unit charge is defined in SI units as joules per coulomb, where 1 volt equals 1 joule (of work) for 1 coulomb (of charge).

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The load that the same type of beam can support is 583.345 pounds if its width is 3.5 inches.

As the maximum load that can be carried by the beam is directly proportional to the width of the beam and a 1.5 inches wide beam can support a load of 250 pounds, an equation can be written as;

L = kw

Here L represents the maximum load supported and w represents the width and k is the constant of proportionality. Therefore;

250 = k × 1.5

Solving for k;

k = 250 ÷ 1.5

k = 166.67

Therefore the equation can be written as;

L = 166.67 w

As the width of the same type of beam is 3.5 inches, the maximum load it can support can be calculated as follows;

L = 166.67 × 3.5

L = 583.345 pounds

Therefore; 583.345 pounds is the maximum load that the beam can support if its width is 3.5 inches.

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According to the question of resistance, technician b is correct.

What do you mean by resistance?

The resistance of an electrical circuit to current flow is measured. Although the term "resistance" may sound negative, it has a good application in electricity. The Greek letter omega represents resistance, which is measured in ohms ().Resistance cannot be measured in an active circuit. As a result, troubleshooting personnel frequently assess resistance by measuring voltage and current and applying Ohm's Law.

Resistance in the cables, grounds, and connections can cause the starter to draw too much current. the cranking current test will indicate if the starter is good.

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The critical stress for crack propagation if the part is loaded perpendicular to the flaw and y for this geometry is 1.24 is 769.27Mpa.

What exactly is critical stress?

Critical stress is a set of physical and psychological symptoms that might occur as a result of being involved in a traumatic critical occurrence. The body's common reaction to an abnormal event is critical incident stress.

Ti-6A1-4V has edge flaw 3.5mm deep

Y = 1.24

KIc for Ti-6A1-4V alloy is 100MPa.m[tex]^{1/2}[/tex]

KIc =σ Y[tex]\sqrt{\pi C}[/tex].

given crack is edge crack, so c= 3.5 × 10⁻³

1m= 1000mm

1mm=10⁻³m

σ = [tex]\frac{100}{1.24\times\sqrt{\pi \times 3.5 \times 10^{-3} } }[/tex] = 769.27Mpa

Critical stress for crack propagation is 769.27Mpa

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According to the question of lead oxide, both A and B are correct.

What is lead oxide?

Lead oxide, often known as lead monoxide, is an inorganic chemical having the molecular formula PbO. PbO exists in two polymorphs: litharge with a tetragonal crystal structure and massicot with an orthorhombic crystal structure. PbO's modern applications are mostly in lead-based industrial glass and industrial ceramics, particularly computer components. According to X-ray crystallography, both polymorphs, tetragonal and orthorhombic, have a pyramidal four-coordinate lead core. The four lead-oxygen bonds are the same length in the tetragonal form, whereas two are shorter and two are longer in the orthorhombic form. The pyramidal structure suggests the presence of a stereo chemically active lone pair of electrons.

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The S-N curve describing fatigue failure displays a horizontal or asymptotic region is called the fatigue limit S-N curve.

Fatigue properties of materials are often described using the fatigue limit or the S-N curve (fatigue curve, Wöhler curve). The S-N curve describes the relationship between cyclic stress amplitude and several cycles to failure. An S-N curve can be described as the number of cycles to failure, N(S), when a material is repeatedly cycled through a given stress range S. OrcaFlex uses the S-N curve to calculate the danger in fatigue analysis. If needed you can establish several different S-N curves and use them at different arc lengths along a line.

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The compression ratio and the equation = cp/cv determine the thermal efficiency of the air-standard Otto cycle.

With a higher compression ratio, the ideal Otto cycle becomes more thermally efficient. We come to the conclusion that the thermal efficiency of the air-standard Otto cycle is a function of the compression ratio and = cp/cv after rewriting the calculation for thermal efficiency using the compression ratio. The constant volume heat addition cycle, often known as the Otto cycle, takes into account one unique instance of an internal combustion engine where the combustion is so quick that the piston does not move, leading to the assumption that combustion occurs at constant volume.

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On a noiseless 3-kHz channel, binary signals cannot be carried faster than 6000 bps (= 2 x 3000 log2 2).

Once Nyquist understood what we were discussing, he offered a simple equation to calculate the Maximum Data Rate (MDR) of a noiseless channel. L represents the signal's level or condition, and MDR is computed as 2 * Bandwidth * Log2L. Any channel has a defined signal-to-noise ratio at a given temperature. SNR = (Power of signal) / is hence directly proportional to the channel capacity (power of noise). For example, 10 * log10(1000) = 30 dB is a common formula for a signal-to-noise ratio of 1000. a frequency that, if the data supported it, would be the theoretical distribution law frequency rather than the observed frequencies.

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Both technicians A and B are correct. It is because when a just-installed fuse blows, it indicates a short-to-ground. If the short-to-ground is on the ground side of the load component and before a grounding switch, the component is not turned off.

A short-to-ground is a term used to refer to a short circuit that has a direct connection to the ground. A short-to-ground in the electrical system can cause a fuse to blow when a component is just installed.  When a short-to-ground occurs on the ground side of the installed component but before a grounding-side switch, it usually not results in turning the component off.

As per the above description, it is concluded that both technician A and technician B state correctly.

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In the cruise situation, the flight and engine working situations are equal to the weight, and the thrust is equal to the drag.

In a cruise situation for the aircraft in satisfactory situation technique, the forces performing on an aircraft in flight can be in equilibrium and produce no internet outside force. In this situation, the increase is equal to the weight, and the thrust is equal to the drag.

Cruise flight can be described because of the phase of flight that falls between climb and descent. the maximum crucial probabilities of enjoy time and enjoy gas are fed on normally in this phase of flight.

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Since the engineer upon investigating, the mobile system is missing from its assigned station. the alarm type that has prompted the engineer to investigate is Proximity.

On a more fundamental level, RFID tagging is just a sophisticated proximity sensor. When a piece of metal is there, a proximity sensor notices that a pallet has just arrived there.

Note that Tags and readers are the two halves of the wireless system known as Radio Frequency Identification (RFID). The reader is an electronic gadget with one or more antennas that transmit radio waves and take in signals from RFID tags.

Hence, it is seen as a tool that detects the presence of nearby objects. A proximity sensor on a mobile phone is typically used to determine when the phone is held close to the face. The answer is proximity because the mobile system is far from where the signal can pick.

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Technician A exists correct. In contrast to brake lights, which turn on instantly when you hit the brakes, tail lights are activated by turning on your headlights or applying the parking brake.

When you press on the brake pedal, friction material from the brake pads snags the rotors. Over time, that friction substance deteriorates. When your brake pads are getting close to their minimum thickness, tiny sensors recognize it and turn on the dash light to alert you that it's time for brake maintenance.

In contrast to brake lights, which turn on instantly when you hit the brakes, tail lights are activated by turning on your headlights or applying the parking brake. The brake lights are a brighter red than the tail lights, which are typically red on cars.

One of three things could be the case if one or more of your brake lights aren't functioning properly: either the brake light system fuse has blown, the brake light bulbs have burned out, or the brake light wire switch has malfunctioned. These problems are all simple to fix.

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Tech A a says that variable valve timing allows the engine's piston displacement to be increased or decreased.

What is engine piston?
Among other related systems, pistons are found in reciprocating engines, rotary pumps, gas compressor, hydraulic cylinders, and pneumatic cylinders. It is the moving part that is enclosed in a cylinder and sealed off from the gas by piston rings. Its function in an engine is to use a piston rod and/or connection rod to transmit force from the expanding gas within the cylinder to the crankshaft. For the goal of compressing and ejecting the fluid in the cylinder, the function is reversed in a pump, when force is transferred from of the crankshaft to the piston. By closing and opening apertures in the cylinder, the piston can also function as a valve in some engines.

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truss abc is changed by decreasing its height from h to 0.9 h. width w and load p are kept the same - force in all its members have increased. is the correct statement

What is force?
According to Aristotle, a force is something that causes an item to move "unnaturally." One of the first researchers to explore force and gravity was Sir Isaac Newton. A push or a push is all that constitutes a force. It might be compared to pushing or pulling on an object. An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. An application of force is the location at which force is applied, and the direction in which the force applied is defined as the the force's direction.

After resolving the members, we obtain the increased component for each member, which causes the force in each member to rise as the height decreases and the angle at each vertex increases.

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Answer:

technician B

Explanation:

your abs modulator is next to your resivor

Technician b is correct. This is right that a scan tool may be required to bleed the abs modulator.

ABS is the acronym for (Anti-locking Braking System). You have the choice of using the steering wheel while braking or turning using this method. When you push the brake pedal, the brake rotor is covered by an unlocked brake pad, giving you complete control of the car in challenging situations.

In other words, this technology uses speed sensors on each wheel to detect when the wheels lock up. When this occurs, the brakes are quickly applied and released in pulses, allowing the wheel to spin freely and prevent spilling while directing the vehicle.

The first indication that your ABS module and the entire braking system need to be bled to get rid of the extra air in the brake system is if you noticed that the brake pedal is particularly spongy or mushy. The ABS system may experience certain issues as a result or become weaker.

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The required 18-inch clearance from the rear of an appliance can be decreased to 6 inches when combustibles are covered with no. 24-gauge sheet metal with such a 1-inch ventilated air space.

What do you mean by sheet metal gauge?

A sheet metal gauge specifies the typical thickness of sheet metal for a given material. The material thickness reduces as the gauge number increases. Steel sheet metal thickness gauges are weighted at 41.82 of pounds per square foot per inch of thickness. This is known as the Sheet Steel Manufacturers' Standard Gage. Other materials, such as aluminium and brass, will have varying thicknesses

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Option d is correct

The alternators do not provide greater reliability and longer service life. This is because any sudden change in the current will result in overheating which will damage it.

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Technical A is correct; check the cranking circuit for adequate amperage draw.

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Answer:

technician a and b are correct

The length of a surface crack that will lead to fracture is 35.29mm.

What do you mean by surface crack?

The surface crack in flexure (SCF) method employs a Knoop indentation to create a tiny semielliptical surface precrack in a bent bar. The DC Potential Drop Method can detect surface crack configuration. The crack shape can be determined with some accuracy by measuring the potential difference distribution along the surface cracks of a structural material subjected to DC current.

given, Kiс=50mpa√m

Y= 1.0

б=150mpa

find a= ? in(mm)

Formula,

Kic=Y.б√πa

where, Kic= Toughness due to fracture

б= applies stress

a= length of the crack

Y= Factor (geometrical)

Now, Kic=Y.б√πa

50=(1.0).(150).√πa

∴0.333= √πa

a= (0.333)²/(√π)

=0.03529m

=35.29mm

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