Difference RS-232, RS-485, RS-422

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Difference RS-232, RS-485, RS-422

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Posted by Nandan Technicals - July 11, 2022

Difference RS-232, RS-485, RS-422

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Posted by Nandan Technicals - January 11, 2022

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Posted by Nandan Technicals - August 14, 2021

monomers Manometer is a device used to measure pressure at a single or multiple points in a single or multiple pipelines, by balancing the fluid column by the same or another column of fluid. Manometers work by the principle that a column of fluid in a tube will rise or fall until its weight is in equilibrium with the pressure differential between the two ends of the tube. For a pressure difference P is the height difference h between the level of liquid in the two halves of the tube A and B, is given by the equation P = pgh, where p is the density of the fluid in the tube. U-Tube Manometer “A U-tube manometer, in which differential pressure is measured as the difference 'h' between the high-pressure reading and the low-pressure reading, multiplied by the density of the liquid in the tube.” The difference in height of the liquid represents the applied pressure. In U-tube manometer we measure the pressure as: P= sp wt * height( fluid)- sp wt * height( Hg) Introduction...

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Hydroelectric Power Plant Multiple Choice Questions and Answers Introduction of Hydroelectric Power Plant Objective Questions and Answers 1. Hydroelectric power plant is __________ a) Non-renewable source of energy b) Conventional source of energy c) Non-conventional source of energy d) Continuous source of energy Answer: Conventional source of energy 2. Which statement about hydroelectric power plant is wrong? a) Efficiency of hydroelectric power plant does not reduce with age b) Its construction coast is very high and takes a long time for erection. c) It is very neat and clean plant because no smoke or ash is produced. d) Meeting rapidly changing load demands is not possible in hydroelectric power plant. Answer: Meeting rapidly changing load demands is not possible in hydroelectric power plant. 3. Which of the following is not a requirement for site selection of hydroelectric power plant? a) Availability of water b) Large catchment area c) Rocky land d) Sedimentation An...

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Posted by Nandan Technicals - June 22, 2021

Z transform 1. What is the set of all values of z for which X(z) attains a finite value? a) Radius of convergence b) Radius of divergence c) Feasible solution d) None of the mentioned Answer: Radius of convergence 2. Is the discrete time LTI system with impulse response h(n)=a n (n) (|a| < 1) BIBO stable? a) True b) False Answer: True 3. What is the ROC of a causal infinite length sequence? a) |z|<r 1 b) |z|>r 1 c) r 2 <|z|<r 1 d) None of the mentioned Answer: |z|>r 1 4. The Z-Transform X(z) of a discrete time signal x(n) is defined as ____________ a) ∑ ∞ k=-∞ x(n)z n b) ∑ ∞ k=-∞ x(n)z -n c) ∑ ∞ k=0 x(n)z n d) None of the mentioned Answer: ∑ ∞ k=-∞ x(n)z -n 5. What is the z-transform of the following finite duration signal? x(n)={2, 4, 5, 7, 0, 1}? ↑ a) 2 + 4z +...

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Colorimetry and Spectrometry Multiple Choice Questions and Answers

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Colorimetry and Spectrometry Multiple Choice Questions and Answers 1. Beer’s law states that the intensity of light decreases with respect to ___________ a) Concentration b) Distance c) Composition d) Volume Answer: Concentration. 2. Laminar flow burner used in Flame photometers is also known as ____________ a) Turbulent burner b) Premix burner c) Total consumption burner d) Nozzle mix burner Answer: Premix burner. 3. Bolometer, a type of detector, is also known as ___________ a) Resistance temperature detector (RTD) b) Thermistor c) Thermocouple d) Golay cell Answer: Thermistor. 4. Lambert’s law states that the intensity of light decreases with respect to __________ a) Concentration b) Distance c) Composition d) Volume Answer: Distance. 5. In Michelson’s interferometer, the __________ of the detector output will depend upon the intensity of incoming radiation. a) Velocity b) Frequency c) Amplitude d) Phase Answer: Amplitude. 6. In Flame emission photometers, the measurement of _______...

Analog Signal VS Digital Signal

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Analog Signal VS Digital Signal Signal A signal is basically the transmission of information from one side to another and this information is electrical form. And signal is a way of communication and represents information or data. A signal is the carrying of information through an electromagnetic wave. Basically signal is the conversion of data into electromagnetic signal and this signal is analog or digital. And based on this format the signals are divided into two categories. And this type is analog signal and digital signal. A signal is an electrical current and is used to carry data from one system to another. Analog Signal An analog signal is a continuous signal and an analog signal represents the equivalent of another quantity. Basically an analog signal is a continuous electrical signal. Analog signals are used to carry information. Basically this signal is represented by a sine wave and this signal has a continuous range of values. Generally analog signals are used only in...

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