The standard for long distance analog signal transmission in process control industry is 4-20 mA
Description : Why is AC better for long distance power transmission than DC ?
Last Answer : ac is more economical to transmit for long distances . wires can be made smaller by step up transformer .. since major cost are wires to transmit .. then at the end of distance step down transformer is used for commercial use.
Description : Analog signal
Last Answer : .embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
Last Answer : Power for lighting in passanger coach, in a long distance electric train, is provided through individual generator of bogie and batteries.
Description : Draw the labeled block diagram of process control system and explain each block.
Last Answer : Explanation - Process control system consists of process or plant, sensor, error detector, automatic Controller, actuator or control element. 1) Process or plant- process means some manufacturing sequence ... process which changes the process variable. Output of this block is denoted by u .
Description : what is mean by long transmission line ?
Last Answer : The transmission line which have length more than 250 km are known as long transmission lines.
Description : Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor
Last Answer : Precise control of reactive current flow entering the transmission and distribution systems can be minimized by using (A) synchronous condenser (B) static VAR capacitor (C) capacitor bank (D) thyristor switched reactor in parallel with capacitor
Description : State standard voltage in India for the following : (i) Generation Voltage (ii) Primary Transmission Voltage
Last Answer : i. Generation Voltage : 3.3KV, 6.6KV,11KV and 17.5 KV ii. Primary Transmission voltage :- 220 KV, 400KV, 765 KV (750 KV)
Description : Define Analog Transducer and give examples of it
Last Answer : Analog Transducer: An analog transducer is a device that converts the input signal into a continuous DC signal of voltage or current. Examples: * Strain gauge * L.V.D.T * Thermocouple * Thermistor
Description : Compare analog and digital instruments .
Last Answer : Parameter Analog Instrument Digital Instrument 1 Principle The instrument that displays analog signals is called as on analog instrument. The instrument that displays ... , etc. Logical analyzer, signature analyzer, computers, microprocessor based instruments, etc.
Description : Compare analog CRO with digital storage oscilloscope (DSO).
Last Answer : Analog CRO DSO 1 High bandwidth Less bandwidth due to aliasing effect 2 High writing speed about 15 GHz Limited speed 3 No memory Has memory ... Less storage time. The digital oscilloscope is capable of an infinite storage time, using its digital memory.
Description : State two advantages of digital system over analog system.
Last Answer : 1. They are less susceptible to noise. 2. The effect of fluctuation in the characteristic of the components, ageing of components etc. is very small in digital circuits. 3. Digital circuits have capability of memory which makes them suitable for computers. 4. More accurate.
Description : Explain the essential toques in analog type measuring instruments.
Last Answer : List of torques in analog instruments: 1. Deflecting torque 2. Controlling / Restraining torque. 3. Damping torque. 1. Deflecting torque: To create deflection proportional to ... the speed higher will be the damping torque bringing the pointer to the equilibrium position quickly.
Description : Compare analog & digital multimeter.
Last Answer : Analog multi-meter DMM Power supply is not required Power supply is required Less suffered from electric noise More suffered from electric Noise Less isolation problems. More ... visual indication Visual indication is not that much better. Less cost More cost
Description : What is Analog to Digital Converter (ADC) ?
Last Answer : Analog to Digital Converter (ADC) Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.
Description : Digital to Analog Converter (DAC)
Last Answer : Digital to Analog Converter (DAC) Digital means binary (1 0) and 1 and 0 may be true and false or on and off or high and low. Analog means continuous signal or information ... wave. Phase Shift Keying (PSK) is transmit digital data by changing the phase of carrier wave.
Description : At a distance of 10 meters form a point source, the intensity level is measured to be 70 dB. At what distance form the source well the intensity be 40 dB? How do you solve this?
Last Answer : Going on memory here….3db is half the intensity. The intensity is usually inversely proportional to r squared. The rest is math, so 70–40 is 30 or ten halves.
Description : What industry represents "The Future"?
Last Answer : Err… computing, smart phones, wireless network?
Description : The Guide to the Oil Industry
Last Answer : The oil industry is a very large network of inter-related businesses that are reliant on oil and oil-based products. Oil is a liquid mineral extracted from the ground. When ... energy consumed worldwide, either domestically inside houses or industrially for operation of many businesses worldwide.
Description : Explain the scope of Mechatronics in Industry. Give any four examples.
Last Answer : There is no limit for scope of Mechatronics in industry. Due to mechatronics speed, quality, flexibility, sophistication and quantity of product has improved drastically. Marketing of product has also become simple. ... . Examples :- MRI., CT-SCAN, Endoscopy Robotics Unmanned Air vehicle.
Description : List standard voltage level used in India.
Last Answer : Standard voltage level used in India: * Generation Voltage : 3.3KV, 6.6KV,11KV and 17.5 KV,21KV (Now a days generation voltage is in the range of 11KV- 33KV) * Primary Transmission voltage :- 220 ... voltages in India are 765 KV (750KV), 400KV, 220KV, 132KV, 110KV, 66KV, 33KV, 22KV, 11KV.
Description : State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.
Last Answer : Following advantages of MCB over Fuse: 1. No need of replacement of fuse wire. 2. Manually restore of supply is simple. 3. Fault understanding by visual inspection 4. More safe than fuse The standard specifications of ... 6A, 10A,16A,20A, 25A, 30A, 32A, 40A, 50A, 60A and 63A 6. 250V and 450 v
Description : Explain the advantages and disadvantages of using memory I/O and standard I/O.
Last Answer : Memory mapped I/O and standard I/O are the two methods for communicating microprocessor with peripherals. Processor talks to both memory and peripheral using the same bus.Two ways to talk to a peripheral. ... of standard I/O is no loss of memory addresses to the use as I/O addresses.
Last Answer : Commonly used standard capacitor is concentric cylindrical type.
Last Answer : Standard resistor is made from maganin.
Last Answer : The standard full-load power factor ratings for synchronous motors are unity or 0.8 leading.
Description : Standard Commands for Programmable Instruments (SCPI)
Last Answer : Standard Commands for Programmable Instruments (SCPI) SCPI stands for Standard Commands for Programmable Instruments it is often pronounced as Skippy. SCPI is a instrument language that control the ... is for storing data in instrument. Display : for presentation.
Description : A differentiator is not usually used in control system, because it : - (A) reduces damping (B) increases error (C) reduces gain margin (D) increases input noise
Last Answer : A differentiator is not usually used in control system, because it : - increases input noise
Description : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system (A) crosses the real axis at +0.1 (B) crosses the real axis at -0.1. (C) crosses the imaginary axis at -0.1 (D) crosses the imaginary axis at +0.1
Last Answer : A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system crosses the real axis at -0.1.
Description : Negative feedback in a closed-loop control system DOES NOT (A) reduce the overall gain (B) reduce bandwidth (C) improve disturbance rejection (D) reduce sensitivity to parameter variation
Last Answer : Negative feedback in a closed-loop control system DOES NOT reduce bandwidth
Description : What are the advantages of open loop control system?
Last Answer : Open loop control system are simple to design. Open loop control system are generally stable.
Description : How can the most distant quasar be 28 Billion light years away? (Strange Universe Series)
Last Answer : As I have stated in the past. There has always been a Universe and there will always be one.
Description : .2.The period of a signal is 10ms. What is its frequency in kilohertz?
Last Answer : 100
Description : Explain Briefly What Happens When The Intr Signal Goes High In The 8085?
Last Answer : Answer :The INTR is a maskable interrupt for the 8085. It has the lowest priority and is also non vectored. When this INTR signal goes into the high state the following things occur / ... the processor saves the address of new instruction into the STACK and an interrupt service subroutine begins.
Description : State different types of electrical signal and draw all types of waveforms.
Last Answer : Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms
Description : basic characteristics of sound signal.
Last Answer : Level and loudness: The amplitude of a sound wave determines its loudness or volume. A larger amplitude means a louder sound, and a smaller amplitude means a softer sound. The loudness of a ... the reproducing system should be capable of handling the maximum and minimum power in the same ratio.
Description : What is the significance of signal conditioner? Explain the need of following in mechatronics system. i) Isolator ii) Filter iii) Amplifier iv) Data converter
Last Answer : Significance: Signal conditioning means manipulating an analog signal in such a way that it meets the requirements of the next stage for further processing. Signal inputs accepted by signal ... -frequency converters, current-to-voltage converters, current loop converters, and charge converters.
Description : List different methods of demodulation of FM signal.
Last Answer : Balanced Slope detection Ratio detector Foster Seeley discriminator Phase locked loop demodulator
Description : For a signal conditioner explain the terms linearization and signal conversion.
Last Answer : Definition : 1. linearization : Many primary elements produce nonlinear outputs and the signal must be linearized to produce a nearly ideal calibration. Specialized analog circuits such as offsetting circuits, ... signal. Even computer algorithms are also used. 2.Signal conversion :
Description : If it takes a transmitted signal 1m sec to go up to the target and come back after reflection, how far is the transmitter from the target? A) 150 Km B) 150 m C) 15 Km D) 1500 m
Last Answer : If it takes a transmitted signal 1m sec to go up to the target and come back after reflection, how far is the transmitter from the target? A) 150 Km B) 150 m C) 15 Km D) 1500 m
Description : In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address A) 0000 H B) 002C H C) 0024 H D) 0004 H
Last Answer : In 8085, whenever a signal is received at TRAP terminal, its program execution is transferred to a subroutine on address 0024 H
Description : If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be A) Large in amplitude B) Small in amplitude C) Distorted D) Distortion less
Last Answer : If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be Distorted
Description : An energy signal has G(f) = 20. Its energy density spectrum is A) 20 B) 100 C) 400 D) 800
Last Answer : 400
Description : What is the Laplace transform of step signal of 5 units magnitude? A) 5s B) 5/s C) s/5 D) 1/s
Last Answer : What is the Laplace transform of step signal of 5 units magnitude? A) 5s B) 5/s C) s/5 D) 1/s
Description : The time base signal in Cathode Ray Oscilloscope (CRO) is (1) A square wave signal (2) A sawtooth signal (3) A triangular wave signal (4) A sinusoidal signal
Last Answer : 2 Saw tooth
Description : Integration of step signal gives (A) Impulse signal. (B) Ramp function. (C) Parabola. (D) Square pulse.
Last Answer : Integration of step signal gives Ramp function.
Description : What are the advantages of a digital signal?
Last Answer : It has only two variable input and output (low or high) (0 or 5).
Description : Draw a neat sketch and explain the accessory used to support long work.
Last Answer : Accessory to support long work: A steady rest is a tool for a lathe, enabling a machinist to make deep cuts in long, slender stock, bore out thin pieces of metal, and generally keeps thin stuff straight. ... tool that follows the cutter, a steady rest is firmly attached to the bed of a lathe.
Description : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as
Last Answer : For a 500 Hz frequency excitation, a 50 km long power line will be modeled as long line
Last Answer : A cumulatively compounded long shunt generator when operating as a motor would be differentially compounded long shunt.
Last Answer : Impedance relays are used for phase faults on long line.