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What do you mean by signal and system?

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Description : What do you mean by signal processing?

Description : What is a signal in science?

Description : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

Answer : The clock frequency of an 8085 microprocessor based system is 3 MHz. What should be the minimum pulse width of the INTR signal so that it is recognized successfully? A) 5.6 µs B) 5.7 µs C) 5.8 µs D) 5.9 µs

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

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 : What is stable and unstable system?

Description : What is the impulse response of the system?

Description : What is a time variant system?

Description : What is the meaning of LTI system?

Answer : The system which satisfies both linearity and time invarient is called linear time invarient (LTI) systrm

Description : Can you convert analog signal to digital?

Description : What do you mean by linear convolution?

Description : What is the Laplace transform of step signal of 5 units magnitude?  A) 5s B) 5/s C) s/5 D) 1/s 

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 : What is the use of digital signal processing?

Description : What are the advantages of a digital signal?

Answer : It  has   only   two  variable   input  and  output (low   or    high)   (0  or    5).

Description : What is the use of signal flow graph?

Description : State different types of electrical signal and draw all types of waveforms.

Answer : Types of electrical signals 1) Sine wave 2) Triangular wave 3) Square wave Waveforms

Description : For a signal conditioner explain the terms linearization and signal conversion.

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 

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 : Explain transformer isolated drive circuits providing both signal and power.

Description :  basic characteristics of sound signal.

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 : List different methods of demodulation of FM signal.

Answer : Balanced Slope detection Ratio detector Foster Seeley discriminator Phase locked loop demodulator 

Description : Analog signal

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%; }

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

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

Answer :  If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be Distorted 

Description : The sampling rate to avoid aliasing for the signal m(t) = 100 cos 200ωt will be A) ≥1/25 sec B) ≥1/50 sec C) ≤1/25 sec D) ≤ 1/50 sec

Description :  An energy signal has G(f) = 20. Its energy density spectrum is A) 20 B) 100 C) 400 D) 800  

Answer :  An energy signal has G(f) = 20. Its energy density spectrum is 400 

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

Answer : 2 Saw tooth 

Description : Integration of step signal gives (A) Impulse signal. (B) Ramp function. (C) Parabola. (D) Square pulse.

Answer : Integration of step signal gives Ramp function.

Description : The standard for long distance analog signal transmission in process control industry is (A) 4-20 mV (B) 0-20 mA (C) 4-20 mA (D) 0-5 V

Answer : The standard for long distance analog signal transmission in process control industry is 4-20 mA

Description : How does signal processing work?

Description : Why digital signal processing is important?

Description : What is meant by fuzzy system?

Description : What is meant by feeder in power system?

Answer : A feeder line is a peripheral route or branch in a network which connects smaller or more remote nodes with a route or branch carrying heavier traffic. The term is applicable to any system based on a hierarchical network.

Description : If the displayed system time and date is wrong, you can reset it using :  (A) Task bar (B) Menu bar (C) Desk top (D) Control panel

Answer : If the displayed system time and date is wrong, you can reset it using : Control panel

Description : Explain following techniques related to energy conservation in transmission and distribution system. (i) By balancing phase currents (ii) Variable technical losses (I2R losses).

Answer : (i) Balancing Phase currents: Proper (healthy balanced) three phase loads always draw equal currents in all lines but single phase loads in the 3 phase 4 wire system or loads connected between two ... . 11) Minimize I2R losses. 12) Balance the load currents. 13) Regulate the system voltages.

Description : Describe the following energy conservation methods of lighting system. i) By replacing lamp sources ii) Using light control gears.

Answer : Energy conservation methods of lighting system:  i) By replacing lamp sources:  Installation of energy efficient fluorescent lamps in place of Conventional fluorescent lamps. Installation of ... (HF) electronic ballasts in place of conventional ballasts which saves energy up to 35%.

Description : The stability of the power system is not affected by  (1) generator reactance (2) line reactance (3) line losses (4) output torque

Answer : The stability of the power system is not affected by line losses

Description : In voltage source converter based HVDC transmission system the active power is controlled by changing (A) phase angle of the converter ac input voltage (B) supply frequency of the converter ac input voltage (C) magnitude of the converter ac input voltage (D) DC voltage at the inverter terminals

Answer : In voltage source converter based HVDC transmission system the active power is controlled by changing phase angle of the converter ac input voltage

Description : steady-state stability of a power system is improved by

Answer : steady-state stability of a power system is improved by using double circuit line instead of single circuit line

Description : The steady state error of the system can be minimized by

Answer : The steady state error of the system can be minimized by increasing gain k

Description : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is (A) causal & linear (B) non-causal & linear (C) causal & non-linear (D) non-causal & non-linear

Answer : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is non-causal & linear

Answer : The steady state stability of the power system can be increased by connecting lines in parallel.

Description : What are advantages and disadvantages of Mechatronics system? 

Answer : Advantages of Mechatronics system:  High level of integration.  Increased functionality and better design.  More use of electronics and software instead of mechanical function.  Assumes ... Its replacement is difficult, that it is difficult to change old system to new system. 

Description : What is the choice of size and number of generator units in interconnected power system?

Answer : Choice of Size and Number of Generating Units: 1. The size/rating and number of generating units in such way that they approximately match with the load curve as closely as possible. 2. In ... , if power plant is connected to grid system then generating unit of higher capacity can be installed.

Description : What is the difference between a line voltage and low voltage control system?

Description : What are the disadvantages of Open loop control system?

Answer : Open loop control system are less reliable. In open loop control system Optimization is not possible. Open loop control system are less accurate.

Description : What are the components of system bus? A) CPU Bus, Address Bus, Data Bus B) Memory, Control Unit, ALU C) Data Bus, Address Bus, Control Bus D) Register, PC, IR

Answer : What are the components of system bus? A) CPU Bus, Address Bus, Data Bus B) Memory, Control Unit, ALU C) Data Bus, Address Bus, Control Bus D) Register, PC, IR

Description : What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

Answer : What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

Description : What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

Answer : What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

Description : What is the traction system?

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