What is opto isolator Mcq?
Answer:it is a device that can be used as an electromagnetic relay without a driver.
Simply so What is the use of opto isolator Mcq? It is a passive device which allows the flow of optical signal power in only one direction and preventing reflections in the backward direction. Explanation: Ideally, an optical isolator transmits the signal power in the desired forward direction.
What is optocoupler Mcq? Optocoupler, also known as optoisolator is a component that transfers electrical signals between two isolated circuits by using light.
also What is WDM Mcq? “Wavelength Division Multiplexing (WDM) is an analog multiplexing technique to combine” Multiple Choice Questions (MCQ) on wavelength division multiplexing with choices magnetic signals, electromagnetic signals, digital signals, and optical signals for online software development courses.
How can the direction of stepper motor be changed Mcq?
Explanation: The direction of the DC motor can be changed by changing the polarity of the voltages connected to its leads.
What is meant by transponder Mcq? This set of Avionics Multiple Choice Questions & Answers (MCQs) focuses on “Satellite Communication Systems”. … Explanation: The transmitter-receiver combination in the satellite is known as a transponder. The basic functions of a transponder are amplification and frequency translation.
How many implementation methods are available for optical isolator?
| Q. | How many implementation methods are available for optical isolators? |
|---|---|
| B. | four |
| C. | two |
| D. | three |
| Answer» d. three |
Which of the following is true about opto couplers? Optocoupler can be used in both input. and output circuitry. Optocoupler acts as an input device. … Optocoupler acts as an output device.
What diode has no depletion layer?
Since they are constructed using a metal compound on one side of their junction and doped silicon on the other side, the Schottky diode therefore has no depletion layer and are classed as unipolar devices unlike typical pn-junction diodes which are bipolar devices.
Why does FET have high input impedance? Reverse bias condition offers very high resistance and that’s the reason why JFETs have very high input impedance. This operation is simply nothing but channel length modulation brought forth by negative gate voltage.
What does DWDM stand for?
Dense Wavelength Division Multiplexing (DWDM) is an optical multiplexing technology used to increase bandwidth over existing fiber networks. DWDM works by combining and transmitting multiple signals simultaneously at different wavelengths on the same fiber.
What is Sonet transmission bit rate? SONET uses a basic transmission rate of STS–1 that is equivalent to 51.84 Mbps. Higher-level signals are integer multiples of the base rate. For example, STS–3 is three times the rate of STS–1 (3 x 51.84 = 155.52 Mbps).
What is the full form of WDM?
Wavelength Division Multiplexing (WDM) is a fiber-optic transmission technique that enables the use of multiple light wavelengths (or colors) to send data over the same medium.
Why microcontrollers are not called general purpose computer?
Solution: They are not called general purpose because they are not meant to do a single work at a time.
What is rpm of DC motor? RPM, which stands for revolutions per minute, is the amount of times the shaft of a DC motor completes a full spin cycle per minute. … The amount of 360° turns, or revolutions, a motor does in a minute is its RPM value. So a motor with an RPM of 24,000 is much more high speed than a motor which has 2400RPM.
What is difference between full step and half-step? A half-step above a key on the piano is the key to its immediate right, while a half-step below a key on the piano is the key to its immediate left. A whole-step is two half-steps. A whole-step above a key on the piano is two keys to its right, while a whole-step below a key on the piano is two keys to its left.
What is meant by decoding quenching?
What is meant by decoding quenching? Option A: In certain phase detection systems the phase detector must be allowed phase to recover from one burst before the next burst is received by it. This is known as decoding quenching.
What is meant by payload in satellite communication? In a nutshell, the payload is the communications antennas, receivers, and transmitters. The rest of the satellite, the bus, supports the payload by providing a structure, power, commanding, and telemetry, an appropriate thermal environment, radiation shielding, and attitude control.
What is the frequency limit of optical Fibre?
What is the frequency limit of optical fiber? – Quora. “The spreading effect for a fiber usually is expressed in terms of MHz per kilometer. Standard 62.5 micron core multimode fiber has a typical bandwidth limitation of 160 MHz per kilometer at 850 nanometers and 500 MHz per kilometer at 1310 nanometers.”
Which converts the optical signal into an electrical signal? A detector is an optoelectronic converter which linearly converts the received optical signal into an electric current.
How many networking modes are available to establish a transmission path?
10. How many networking modes are available to establish a transmission path? Explanation: There are two networking modes often referred to the networking. These are connection-oriented and connectionless networking modes.
What is forward bias? What is Forward Bias? Forward bias or biasing is where the external voltage is delivered across the P-N junction diode. In a forward bias setup, the P-side of the diode is attached to the positive terminal and N-side is fixed to the negative side of the battery.
What is forward bias condition?
Forward Bias: This bias condition incorporates the connecting of a positive voltage potential to the P-type material and a negative to the N-type material across the diode, thus decreasing the width of the diode. … Zero Bias: This is a bias condition in which there is no external voltage potential applied to the diode.
What is meant by avalanche breakdown? Avalanche breakdown (or “the avalanche effect”) is a phenomenon that can occur in both insulating and semiconducting materials. It is a form of electric current multiplication that can allow very large currents within materials which are otherwise good insulators. It is a type of electron avalanche.