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In a helocopter, to change from hovering to flying forward, you adjust the cyclic. You push it forward, which increases the pitch of the rotor at the rear, decreasing it at the front, which tilts the aircraft forward, causing it to move forward. You also adjust the collective up, to increase the overall pitch, causing the aircraft to go up, because you want to quickly gain altitude in order to have a safe margin to auto-rotate in case the engine fails.

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Why 555 IC is called a timer?

Change as time from low to high voltage and opposite


What is the type of current in the maglev train ac or dc?

maglev train works on alternating current..The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils. This change in polarity causes the magnetic field in front of the train to pull the vehicle forward, while the magnetic field behind the train adds more forward thrust.


What is the behavior of a forward and reverse biased diode?

Forward Resistance:def: It is resistance offered by diode to the forward bias is known as forward resistance.This resistance is not the same for the flow of DC as for the changing current. Accordingly this resistance is of two types :1. DC FORWARD RESISTANCE.2. AC FORWARD RESISTANCE.1. DC forward resistance: It is the opposition by diode to the DC. It is measured by the ratio of DC voltages across the diode to the resulting DC current through it.2. AC forward resistance: It is the opposition offered by the diode to the changing current. It is measured by the ratio of change in voltage across diodes to the resulting change in current through diode. The AC forward resistance is more significant as the diodes are generally used with alternating voltage.Reverse Resistance:def: The resistance offered by the diode to the reverse bias is known as Reverse Resistance. It can be DC reverse resistance or AC reverse resistance depending upon whether the reverse bias is direct or changing voltage. Idealy the reverse resistance of a diode is infinte however in practice the reverse resistance is not infinite because for any value of reverse bias, there does exist a small leakage current. It may be emphasized their that reverse resistance is very large compared to the forward resistance.These Definitions are from PRINCIPLES OF ELECTRONICS by V.K MEHTA and ROHIT MEHTA


May text links be underlined or displayed in a different size from the other text on a web page?

Yes. Use a CSS rule targeting the anchor element to achieve this. For instance: body { font-family:sans-serif; font-size:12px; color: #333;} a {font-family: serif; font-size: 22px; text-decoration:underline; color:#f4f4f4;} The anchor tag also has pseudo classes that allow you to change the appearance of visited and active anchors, as well as links that the mouse is hovering over.


What is the time required from changing star to delta?

The change over time will vary with the type of motor, size of motor and the connected load to the motor. The time should be adjusted so that the motor is up to speed and stabilized at the star speed. It is at this point that the change to delta should take place. One thing to note is, do not leave the motor running is the star position any longer that it needs to.

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yes. +++ In fact it's how the timing is adjusted.


How do spacecrafts fly?

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How do you change the air fuel ratio on a 1984 Chevrolet Camaro?

It is set and adjusted by the engine control module.