Heroelectric - Isieindia - Klu Joint Industry Project

Positive camber is used to compensate for wheels tilting inward due to the weight of the vehicle. When a vehicle is loaded, the weight causes the suspension to compress, which can result in the wheels tilting inward. Positive camber, which means the top of the wheels is tilted outward, is used to counteract this effect and keep the wheels perpendicular to the road surface. This helps to maintain optimal contact between the tires and the road, improving stability and handling. Therefore, the statement is true.

Heating and cooling of the atmosphere generate convection currents. When the atmosphere is heated, the air molecules gain energy and become less dense, causing them to rise. As the heated air rises, it creates a region of low pressure, which draws in cooler air from surrounding areas. This cooler air then gets heated and rises, creating a continuous cycle of rising warm air and sinking cool air. This movement of air due to temperature differences is known as convection, and it plays a crucial role in redistributing heat energy throughout the atmosphere.

The centroid of a composite figure can be determined using both the analytical method and the graphical method. The analytical method involves calculating the centroid by finding the average of the x and y coordinates of all the individual components of the figure. The graphical method involves drawing the figure on a graph and locating the point where the lines of symmetry intersect, which is the centroid. Therefore, both methods can be used to determine the centroid of a composite figure.

In an automobile engine, knocking refers to the sound produced when the air-fuel mixture in the combustion chamber ignites prematurely or unevenly. This can occur due to various reasons such as improper fuel quality, incorrect ignition timing, or excessive heat. The knocking sound is typically a metallic pinging or rattling noise that can be heard from the engine. Therefore, the correct indication of knocking in an automobile engine is an audible sound.

The correct answer is "Hot body----Thermocouple-----Amplifier and converter-----Display system". In a temperature measurement system, the hot body is the source of the temperature being measured. The thermocouple is the sensor that measures the temperature and converts it into an electrical signal. The amplifier and converter are used to amplify and convert the electrical signal from the thermocouple into a form that can be displayed on the display system. Therefore, the correct arrangement is hot body, thermocouple, amplifier and converter, and display system.

Petrol and diesel engines have a negative impact on the environment because they help deplete natural resources and contribute to increasing CO2 emissions. These engines rely on fossil fuels, which are non-renewable resources, and their combustion releases CO2 into the atmosphere. This contributes to the greenhouse effect and climate change. Therefore, the use of petrol and diesel engines is harmful to the environment.

When a cold engine is started, it requires a richer mixture. This is because a richer mixture means there is a higher amount of fuel in relation to the amount of air. A cold engine needs more fuel to ignite and run smoothly, as the fuel is less likely to vaporize in cold temperatures. A richer mixture helps to compensate for this and ensures that the engine starts and runs properly.

The torque available at the driving wheels can be calculated by multiplying the torque developed by the engine with the gear ratio and the final drive ratio, and then dividing by the transmission efficiency. In this case, the torque developed by the engine is 125 N-m, the gear ratio is 1.75, the final drive ratio is 4.11, and the transmission efficiency is 90%. Therefore, the torque available at the driving wheels is (125 N-m * 1.75 * 4.11) / 0.9 = 809.1 N-M.

The maximum wind energy available is determined by multiple factors. Firstly, air density plays a crucial role as denser air can carry more energy. Secondly, the cube of wind velocity is important because the kinetic energy of the wind is directly proportional to the cube of its speed. Lastly, the square of the rotor diameter affects the amount of wind that can be captured and converted into energy. Therefore, all three factors, air density, wind velocity, and rotor diameter, contribute to the maximum wind energy available.

Absolute pressure is the total pressure exerted by a fluid, including both the pressure exerted by the fluid itself and the pressure exerted by the surrounding atmosphere. To measure absolute pressure, one needs to consider both the gauge pressure (pressure measured relative to atmospheric pressure) and the atmospheric pressure. Therefore, the correct answer is "Gauge pressure + Atmospheric pressure".

Ceiling fans typically use a 1 Phase Induction motor. This type of motor is commonly used in household appliances due to its simplicity, cost-effectiveness, and reliability. A 1 Phase Induction motor operates on a single-phase power supply, making it suitable for residential applications. It consists of a stator and a rotor, with the stator producing a rotating magnetic field that induces current in the rotor. This current creates a magnetic field in the rotor, causing it to rotate and drive the fan blades. Therefore, the correct answer is 1 Phase Induction.

Single phase induction motors are not self-starting. Unlike three-phase induction motors, which can start on their own due to the rotating magnetic field produced by the three-phase power supply, single-phase induction motors require an external means to start. This can be achieved through the use of a starting capacitor or a centrifugal switch, which helps create an initial rotating magnetic field to initiate motor rotation. Therefore, the correct answer is false.

In a diesel engine, the temperature of gases under full load can reach very high levels due to the combustion process. The correct answer is 550-650 degree Celsius, as this range accurately represents the high temperatures that can be reached in the engine. These temperatures are necessary for the efficient operation of the diesel engine and the combustion of the fuel.

The valve lifter is the component that is responsible for opening the valve. As the cam lobe on the camshaft rotates, it pushes against the valve lifter, causing it to move upward. This upward movement of the valve lifter then pushes against the valve, opening it and allowing the flow of air or fuel into the combustion chamber. Therefore, the valve lifter is the correct answer as it directly relates to the opening of the valve.

If the valve clearances are excessively large, it can lead to incomplete valve closure. This means that the valves may not fully close when they should, resulting in a loss of compression in the engine. This can cause a decrease in engine performance, including reduced power and fuel efficiency. It can also lead to issues such as misfires and engine noise. Therefore, the correct answer is incomplete valve closure.

When cells are connected in series, the voltage ratings of each individual cell are added together. This means that the overall voltage rating of the series connection increases. Connecting cells in series does not affect the current rating or the life of the cells. Therefore, the correct answer is "Increasing voltage rating."

The ideal charging current for a 200Ah battery would be 20A. This is because the charging current should be around 10% of the battery's capacity for optimal charging. In this case, 10% of 200Ah is 20A.

Tubular pipe sections are better for torsion because they have a circular cross-section, which distributes the torsional forces evenly throughout the pipe. This design provides greater strength and resistance to twisting compared to other pipe sections such as channel, box, or rectangle, which have different cross-sectional shapes. The circular shape of the tubular section allows it to withstand torsional loads more effectively, making it the preferred choice for applications where torsion is a significant factor.

The performance of an accumulator involves storing data and performing arithmetic operations. The accumulator is a register in a computer's central processing unit (CPU) that stores intermediate results of arithmetic and logical operations. It is used for calculations such as addition, subtraction, multiplication, and division. The accumulator holds the data being operated on and the result of the operation. It is a fundamental component in many computer architectures and plays a crucial role in executing arithmetic operations efficiently.

The statement suggests that cast surfaces have good finishing, but the correct answer is false. Cast surfaces typically have rough finishes due to the nature of the casting process. The molten material is poured into a mold and solidifies, resulting in a textured surface. Additional finishing processes such as grinding or polishing may be required to achieve a smoother surface.

The modulus of resilience is a measure of a material's ability to absorb energy without permanent deformation. It is calculated as the area under the stress-strain curve up to the elastic limit. In this case, the maximum stress applied is given as 130 N/mm2 and the modulus of elasticity (E) is given as 100 x 103 Mpa. The modulus of resilience can be calculated using the formula: Resilience = (1/2) * (σ^2 / E). Plugging in the values, we get Resilience = (1/2) * (130^2 / (100 x 103)) = 0.0845 N/mm2. Therefore, the correct answer is 0.0845 N/mm2.

A feeler gauge is a thin strip of metal with various thicknesses that is used to measure the clearance between the valve and tappet of an IC Engine. It is inserted between the valve and tappet to determine the gap. The correct answer is feeler gauge because it is specifically designed for this purpose and provides accurate measurements of the clearance.

The correct answer is (oC / 5) = (oF - 32) / 9. This equation represents the relationship between the Celsius and Fahrenheit scales. It states that to convert a temperature from Celsius to Fahrenheit, you need to multiply the Celsius value by 9/5 and then add 32.

The commutator is a crucial component in a DC motor that helps to convert the alternating current (AC) supplied to the motor into direct current (DC). It consists of a segmented metal ring that is connected to the rotor winding. As the rotor rotates, the commutator ensures that the current flow in the rotor winding is always in the same direction, resulting in a DC motor. Therefore, the presence of a commutator indicates that the motor is a DC motor and not an AC type.

A positive action clutch refers to a type of clutch that engages and disengages with a positive and definite action, ensuring a reliable and precise connection between the driving and driven components. This type of clutch is designed to provide a strong and secure engagement, minimizing any possibility of slippage or power loss. It is commonly used in applications where a reliable and immediate transfer of power is required, such as in high-performance vehicles or heavy machinery.

Railway tracks are made of metal because of their elongation properties. Elongation refers to the ability of a material to stretch or expand under tension without breaking. Railway tracks need to withstand the weight of heavy trains and the forces exerted on them, such as temperature changes and vibrations. Metal tracks have high elongation, allowing them to absorb these forces without deforming or breaking. This ensures the safety and stability of the tracks, preventing accidents and derailments.

The concept of stream function is applicable to two-dimensional flow because it is a mathematical tool used to describe the motion of a fluid in two dimensions. It helps to visualize the flow patterns and calculate important flow properties such as velocity and pressure. In two-dimensional flow, the fluid motion occurs in a plane, and the stream function represents the flow lines that are perpendicular to this plane. Therefore, it is not applicable to three-dimensional flow, uniform flow, or irrotational flow only.

Heating and cooling of the atmosphere generates convection currents. Convection is the process of heat transfer through the movement of fluid or gas. When the atmosphere is heated, the air molecules become less dense and rise, creating an upward flow. As the air cools, it becomes denser and sinks, creating a downward flow. This continuous cycle of rising and sinking air creates convection currents in the atmosphere, which play a crucial role in redistributing heat and moisture around the Earth.

When capsules are connected in series, the sensitivity of the capsule is increased. This is because when capsules are connected in series, the output voltage of each capsule adds up, resulting in a higher overall output voltage. This increase in output voltage indicates an increase in sensitivity, as the capsule can detect smaller changes in input signals. Connecting capsules in series allows for a cumulative effect, enhancing the overall sensitivity of the system.

Tactile sensors are specifically designed to detect and measure physical touch or contact. They are sensitive to touch and can detect variations in pressure or force applied to them. Therefore, the correct answer is "Touch sensitive."

Both electric and hybrid vehicles use a high-voltage battery. Electric vehicles rely solely on the high-voltage battery to power the vehicle, while hybrid vehicles use a combination of the high-voltage battery and an internal combustion engine. The high-voltage battery in these vehicles is responsible for providing the necessary power to run the electric motor and other electrical components.

When an elevator is traveling at a constant velocity, it means that there is no acceleration occurring. In this case, the normal reaction R, which is the force exerted by a surface to support the weight of an object resting on it, is equal to the weight of the object. The weight of an object is given by the equation m*g, where m represents the mass of the object and g represents the acceleration due to gravity. Therefore, the correct answer is mg.

In an exploded assembly drawing, a phantom line is used to illustrate how parts fit together. A phantom line is a dashed line that shows the outline of an object that is not visible in the current view. It is commonly used to represent hidden or obscured parts in the assembly, allowing the drafter to show the relationship between different components and how they fit together.

To increase speed, we need to increase the RPM (revolutions per minute). RPM refers to the number of rotations an object makes in a minute. Increasing the RPM means the object will rotate faster, resulting in an increase in speed.

When the land near the earth's equator is heated, it causes the air above it to become warm and rise. As the warm air rises, it creates a low-pressure zone near the surface. The surrounding cooler air then rushes in to fill this void, creating large atmospheric winds. These winds, known as trade winds, blow from east to west and play a crucial role in shaping weather patterns and ocean currents around the world.

Static calibration refers to the process of establishing a relationship between the input and output of an instrument. It involves determining the instrument's response to known input values and creating a calibration curve or equation that can be used to accurately measure unknown input values based on the instrument's output. This calibration process ensures that the instrument provides accurate and reliable measurements.

Electric vehicles produce zero emissions because they are powered by electricity stored in batteries, rather than relying on fossil fuels. This means that they do not produce any tailpipe emissions that contribute to air pollution and greenhouse gas emissions. Electric vehicles are considered to be a cleaner and more sustainable alternative to traditional gasoline-powered vehicles and hybrid vehicles, which still rely partially on internal combustion engines. Therefore, the correct answer is electric.

High-voltage cables can be identified by the wording "high-voltage" etched into their insulation. This labeling helps to clearly indicate that the cable carries a high voltage and should be handled with caution. The color of the cable or the presence of the color red or orange does not necessarily indicate that it is a high-voltage cable. Therefore, the correct way to identify a high-voltage cable is through the etched wording on its insulation.

Micro-controllers are considered to be portable and cheaper compared to PLCs. This is because micro-controllers are smaller in size and can be easily carried or moved around, making them portable. Additionally, micro-controllers are generally less expensive than PLCs, making them a more cost-effective option for certain applications.

In a four cylinder engine, each cylinder fires once every two revolutions of the crankshaft. Since a full revolution of the crankshaft is 360 degrees, the angle moved by the crankshaft between firing impulses is half of that, which is 180 degrees.

The correct answer is 20-22 A because a 200Ah battery typically requires a charging current of around 10% of its capacity. In this case, 10% of 200Ah is 20A, so the charging current would be in the range of 20-22 A.

The terminal potential difference of a cell can be calculated using the formula V = E - Ir, where V is the terminal potential difference, E is the electromotive force (e.m.f.) of the cell, I is the current flowing through the cell, and r is the internal resistance of the cell. In this case, the e.m.f. is given as 2V, the current is 5A, and the internal resistance is 0.1Ω. Substituting these values into the formula, we get V = 2 - (5 * 0.1) = 2 - 0.5 = 1.5V. Therefore, the correct answer is 1.5V.

The torque developed by a disc clutch is given by the equation T = µ.W.R. This equation represents the relationship between the torque (T), the coefficient of friction (µ), the normal force (W), and the radius of the clutch (R). The coefficient of friction represents the interaction between the surfaces of the clutch and determines the amount of frictional force that can be generated. Therefore, the correct answer is T = µ.W.R, as it accurately represents the torque developed by a disc clutch.

The small scale wind machine generates 2 KW of power.

Throttle body injection is a type of fuel injection system where fuel is injected into the throttle body, which is located between the air intake manifold and the engine intake valves. This system uses a single fuel injector that sprays fuel into the throttle body, allowing it to mix with the incoming air before entering the engine cylinders. Throttle body injection is less precise than direct injection or sequential injection, as it does not deliver fuel directly into each cylinder. However, it is a simpler and less expensive system to implement, making it a popular choice in some vehicles.

Resolution refers to the smallest change that a sensor can detect. It is a measure of the sensor's ability to distinguish between small differences in the quantity being measured. A higher resolution means that the sensor can detect smaller changes, while a lower resolution means that it can only detect larger changes. Accuracy, precision, and scale are not directly related to the smallest detectable change by a sensor.

The correct answer is Wn (sin α + 0.25 μ cos α). This equation represents the axial force required for engaging a cone clutch. The axial force is dependent on the normal force (Wn), the angle of the cone (α), and the coefficient of friction (μ). The equation takes into account both the force due to the normal force and the force due to friction, with the frictional force being 0.25 times the normal force.

not-available-via-ai

Tactile sensors are typically constructed using multiple capsules that detect pressure or touch. The correct answer states that tactile sensors work through series connection of capsules. This means that the capsules are connected in a series circuit, where the output of one capsule is connected to the input of the next capsule. This allows for the sensors to accurately detect and measure pressure or touch by combining the outputs of multiple capsules in a sequential manner.

The characteristic that provides an output with respect to the relation with the input is called the response of a system. This means that when an input is given to a system, the response is the resulting output or behavior of the system. The response of a system can vary depending on the input and the characteristics of the system itself.