48*2.2 = 105.6VA
What is the answer to a coulomb is a measure of?
A coulomb is a measure of electric charge and is equal to -6.24151 x 10^18 electrons.
What is the difference between amplitude shift keying and AM modulation system?
Major disadvantage is that telephone lines are very susceptible to variations in transmission quality that can affect amplitude
Ann
What is the difference between the input bias current and the input offset current?
A: difference in bias current causes the other
What type of doping have the drain and the source of a PMOS transistor?
PMOS - (drain + source) = p-type doping
NMOS - (drain + source) = n-type doping
:)
Can anybody please tell some websites to get lecture notes for engineering?
'nptel' is the best web site for any engg. branch,it is maintained by IIT professors.
Why is highly coupled module difficult to unit test?
Unit test can be done within a single module
Cohesion of a single module/component is the degree to which its responsibilities form a meaningful unit; higher cohesion is better.
Someone had vague reference to decomposability here. Clarification?
How about: 'Cohesion is inversely proportional to the number of responsibilities a module/component has.'
Coupling between modules/components is their degree of mutual interdependence; lower coupling is better.
size: number of connections between routines
intimacy: the directness of the connection between routines
visibility: the prominence of the connection between routines
flexibility: the ease of changing the connections between routines
A first-order principle of software architecture is to increase cohesion and reduce coupling.
so having coupling in program is not correct
reduce coupling in your program it will favour Unit testing......
What happens when a light bulb is unscrewed in a series circuit?
All other light bulbs will turn off due to the series circuit being broken. The electrons cannot travel all the way through, hence the current will also not flow in the circuit, switching off all the other bulbs too.
CommentIt's worth pointing out that the full supply voltage will then appear across the lamp holder -so take care!Why is the cathode ray tube's filament made of tungsten?
Because tungsten has a high melting point. This allows it to be heated red/white hot without melting. This high temperature results in the thermionic emission (boiling off) of electrons which are needed for the CRT to work.
Tungsten also has a low vapour pressure at high temperatures, so it won't evaporate too quickly, and it is relatively cheap.
Can a capacitor be gradually charged by lesser capacitors?
A: SURE capacitors in parallel will share the charge. But don't expect a .0001 mfd capacitor to charge a 1000 mfd capacitor. It just does not have the power stored to effectively charge the 1000 mfd. EXAMPLE 1litter of water cannot fill up a 5 litter container
Why is constant voltage needed across digital circuit?
A; Many years ago the industry established a standard of 5 volts as an operational power. This is no longer true. But the reason was is to provide bias for the inputs to establish a level of triggering and also provide noise immunity with hysteresis
Why is the voltage across a battery in a parallel circuit equal to the voltage across each bulb?
The voltage across a battery in a parallel circuit is equal to the voltage across each bulb because Kirchoff's Voltage Law (KVL) states that the signed sum of the voltages going around a series circuit adds up to zero. Each section of the parallel circuit, i.e. the battery and one bulb, constitutes a series circuit. By KVL, the voltage across the battery must be equal and opposite to the voltage across the bulb.
Another way of thinking about this is to consider that the conductors joining the battery and bulbs effectively have zero ohms resistance. By Ohm's law, this means the voltage across the conductor is zero, which means the voltage across the bulb must be equal to the voltage across the battery and, of course, the same applies for all of the bulbs.
What signal allows AC to flow through terminal T1 to T2 on the Triac?
A: It depends on the current load but the Small terminal is the gate that will allow the triac to conduct. However the gate cannot be used to shut it off, The only way to shut it off is t reduce the current below the holding current or revering the polarity for the triac when conducting
A: When a signal is not amplified but simply taken from an emitter the reason is that the emitter will provide better current capabilities
Why is voltmeter is connected in parallel and ammeter in series?
Because its function is to measure the current, i.e. the amount of electrical flow in the circuit, and this require that the current flows through the ammeter A good ammeter has very low series resistance, so connecting it in series will not affect your circuit. Be careful when using an ammeter , because of its very low resistance , it can cause a short circuit if you use it by mistake to measure "voltage", so avoid connecting it in Parallel.
What is the breakdown voltage for air?
A: Define air first desert air or rainy air
3KV/mm or 3X10^6 V/M
What is the function of light detector circuit?
a: its function is to detect a change of light withing its perimeter
The ideal passband of a receiver should have steep sides and a flat top. However many receivers use stacked filters to create the passband, and consequently the top of the passband sometimes has a ripple on it. This can cause distortion of the received signal.
What are the system applications of a class B amplifier?
Class B operated amplifier is used extensively for audio amplifiers that require high power outputs. Its also used as the driver and power amplifier stages of transmitters.
What are the essential differences between a semiconductor junction diode and a tunnel diode?
A: The essential difference is while it will behave like a normal diode at some at .6 forward voltage it has a negative impedance area before this point is reached it is not a very stable area to maintain and has the tendency to switch from one mode [low level] to the other .6v and very fast endeed.