Electronics Engineering

A: A current source can be defined as a zero impedance source. A battery is essentially a zero impedance since it can provide lots of current with zero volts out

A Universal is a choice of words but this chip is widely used as a timer the accuracy for long elapse time is very good so that is widely used

The Q factor of a coil, sometimes called the unloaded Q factor, is the ratio of the energy stored in the coil to the energy dissipated in the resistance of the wire.

it makes banking more easy and simpler to use

A: It is a pulse of any duration designed to trigger an event i logic design

A clipper can act as a half wave rectifier but it might be a little hard.

First of all, DMM stands for Digital Multimeter. The -multi implies the meter measures several different parameters, usually voltage, current, resistance, and sometimes other things such as frequency. The input characteristics of a DMM will be very different depending on the parameter selected.

For current, the ideal meter would have zero input resistance. Since the ammeter is inserted in series with the circuit under test, any resistance will alter the measured current, introducing error in the measurement.

A current transformer works on the same principle as that of a simple transformer however it steps down the high current into a low level so that it can be measured using an ammeter of a suitable range. In some current transformers extra cores are provided. This is done in order to prevent the faulty currents i.e. the over currents, earth faults, differential protections. The extra cores of a C.T. gets saturated as soon as the faulty currents starts flowing and thereby does not harm the main core of the transformer and the ammeter connected. The C.T. is always connected in the line carrying current. It first steps down the current to a measureable form and further gives this current to the ammeter.

The gain and bandwidth product is constant only for first order systems. However many complex systems which can be converted and studied as first order, it holds good. This is simple mathematics as in the first order system the frequency appears in the denominator. So if it increases by x times then gain (the modulus of the transfer function) is reduced by x times (approximately).

Flip flops , which retain there data even after in power down mode, are referred as retention flip flops.

NTC is negative temp coefficient transducer,working with resistor while lm 35 is an IC type transducer

A: ABSOLUTELY but only in its function . To implement a change requires additional power requirements and design

Gunn Diodes are used in high frequency electronics. The advantages are increased efficiency and improved temperature stability while a disadvantage is the Gunn Diode can get burned out.

A cruise control is an example of a closed loop servo.

moving coil & moving iron

A: And system or amplifier may have instability as some point due to external or internal function therefore intervention is needed to stabilize the system at that particular point of operation.

yes lenz law states that every current opposes the reason which cause the generation of that current . it is very useful for considering back emf in dc motor.

The lenz law also help us to determine the supply voltage of DC motor.

four diodes

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

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

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.

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

cut in vge si .6&ge 0.2

A: A Binary code represent a binary number 0.1.2.4.8. etc. that is why it is called a weighted number