Normal electrical motor produces rotatory motion same the linear motor produces linear motion. Linear motors have low efficiency. Linear motor can directly produce straight line motion linear motor do not required gears or crank shaft to produce linear motion.

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Jan 17, 2018
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anonymous

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**Description :** Write short notes on diode.

**Last Answer :** Diode is made from semiconductor material like silicon or germanium. Diode may use as rectifier which convert AC to DC. It is a electronic component. It is two terminal device, one is anode and second is ... in one direction. Diode is made from P-type and N-type material. Diode have a PN junction.

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**Description :** Write short notes on Arduino.

**Last Answer :** Arduino: Arduino is a open source hardware and software. Arduino is a microcontroller. Since Arduino is open source it have many manufacturer. Arduino project was started in about year 2005 ... many sensors to the Arduino. Arduino board have microprocessor, crystal oscillator, 5V voltage regulator.

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**Description :** Write short notes on: 1) Phosphor characteristics 2) Liquid crystal display

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**Description :** write short notes on single phase system.

**Last Answer :** A "phase" in an electrical system is often referred to as the waveform (may be voltage or the current) of the power supply. The waveform in an AC system is typically ... domestic household or commercial supplies and street lighting. Industrial supplies requires three phase electrical supply .

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**Description :** write short notes on BH curve.

**Last Answer :** The B-H curve is the relation between Flux density B in Wb/m2 (on Y Axis) and H in AT/m (on X axis) It is also known as magnetization characteristics. This curve particularly useful ... occurs. At point A' material gets magnetically saturated and the curve becomes flat (parallel to X axis)

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**Description :** write short notes on Low-pass filter.

**Last Answer :** low-pass filter (1) filter exhibiting frequency selective characteristic that allows low-frequency components of an input signal to pass from filter input to output unattenuated all high-frequency components are ... the bandwidth of the filter. A filter whose impulse response is a low-pass signal.

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**Description :** Why are the notes that I add to my Mac address book being deleted?

**Last Answer :** answer:If you want to add any extra information, type it in the Note section. You can have Address Book display a picture of the person or any image that you want. To add a picture, just drag any image ... the File menu (or press Command-S). . . . were you doing this last and most important part?

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Is there a free program that will let me sync my notes from my iphone to my computer through itunes?

**Description :** Is there a free program that will let me sync my notes from my iphone to my computer through itunes?

**Last Answer :** I am pretty sure mine does it automatically. What version of iPhone OS and iTunes do you have?

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**Description :** Can you edit iphone "notes" on your mac and then sync to the phone?

**Last Answer :** no you can not. There isn’t a way to do that right now. Hopefully in the future cause that would be awesome

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**Description :** A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.

**Last Answer :** Solution

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**Description :** What are ‘Linear actuators’ ? State applications.

**Last Answer :** What are ‘Linear actuators’ ? State applications.

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**Description :** Linear algebra problem: Rank of a matrix

**Last Answer :** Linear algebra problem: Rank of a matrix https://youtu.be/b7tPLA3_y6Y

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**Description :** Linear algebra problem: The determinant of the matrix

**Last Answer :** Answer : Linear algebra problem: The determinant of the matrix

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**Description :** Linear Algebra Problem the solution to the system of equations

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**Description :** Linear Algebra Problem 2

**Last Answer :** https://youtu.be/zAPDYO0q-9w Linear Algebra Problem 2

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**Description :** Linear Algebra Problem The product of eigen values of the matrix

**Last Answer :** Linear Algebra Problem The product of eigen values of the matrixhttps://youtu.be/JGcynUZFQ78

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**Description :** A system is linear if and only if it satisfies

**Last Answer :** A system is linear if and only if it satisfies principle of superposition and principle of homogeneity

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**Description :** A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will

**Last Answer :** A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will not change

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**Description :** Which of the following converts linear displacement from a mechanical reference into a proportional electrical signal containing phase and amplitude information? A) CRO B) LVDT C) RVDT D) None of these

**Last Answer :** Which of the following converts linear displacement from a mechanical reference into a proportional electrical signal containing phase and amplitude information? A) CRO B) LVDT C) RVDT D) None of these

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**Description :** The power flow problem mathematical model for a linear transmission network (A) is non-linear (B) is linear (C) considers time variation of generation (D) does not consider tap-changing transformers

**Last Answer :** The power flow problem mathematical model for a linear transmission network is non-linear

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**Description :** What is the difference between linear and nonlinear electrical loads?

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**Description :** What are the disadvantages of the linear regulator? how are they overcome in the switching regulator? What is continuous and discontinuous mode switching regulator?

**Last Answer :** Disadvantages of the linear regulator: Linear regulator waste power in the form of heat. Linear regulator has very low efficiency. Linear regulator cannot be used for the step ... between continuous mode and discontinuous mode switching regulator.

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**Description :** Linear Time Invariant (LTI) System

**Last Answer :** Linear Time Invariant System Linear system means a system which possesses the property of superposition. Time invariant system means its behavior and characteristics are fixed over time. Before ... from the impulse response. Impulse response is related to frequency response via Fourier transform.

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**Description :** What is the largest amount in a legal tender/currency?

**Last Answer :** Post WWII Hungary printed 100 Quintillion Dollar notes. (learn to use Google, you can find out all this kind of stuff)

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**Description :** Split phase induction motor

**Last Answer :** Split phase induction motor : There are two windings used in split phase induction motor. It is a type of single-phase induction motor. There are two winding one is called main winding and ... motor have low starting torque it is used for small fans, blowers, centrifugal pumps, grinders etc.

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**Description :** Describe the reason of using dc series motor for electric trains.

**Last Answer :** Electric trains require an inverse torque speed characteristics for proper operation. That is a higher torque is required at start (when speed is nil or low) and as the train picks up ... torque - speed characteristics of DC series motors match, these motors are suitable for electric trains

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**Description :** A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be

**Last Answer :** A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net Voltage across armature resistance at the time of plugging will be 474 V

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**Description :** Damper winding in a synchronous motor

**Last Answer :** Damper winding in a synchronous motor Serves to start the motor.

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**Description :** In a double squirrel cage induction motor, good starting torque is produced as (A) Large current flows through the outer high resistance winding. (B) Large current flows through the inner high ... the outer high resistance winding. (D) Large current flows through the inner low resistance winding.

**Last Answer :** In a double squirrel cage induction motor, good starting torque is produced as Large current flows through the outer high resistance winding.

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**Description :** A change of 4% in the supply voltage to an induction motor will produce a change of approximately

**Last Answer :** A change of 4% in the supply voltage to an induction motor will produce a change of approximately 8% in the rotor torque

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**Description :** A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is

**Last Answer :** A 200 V dc shunt motor is running at 1000 rpm and drawing a current of 10 A. Its armature winding resistance is 2 Ohm. It. is braked by plugging. The resistance to be connected in series with armature to restrict armature current to 10 A, is 36 Ohm

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**Description :** In an induction motor if the flux density is reduced to one-half, of its normal value then the torque will (1) reduce to one-half (2) reduce to one-fourth (3) remain unchanged (4) increase four times

**Last Answer :** In an induction motor if the flux density is reduced.to one-half, of its normal value then the torque will reduce to one-fourth

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**Description :** The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque (1) Decreases (2) Increases (3) Remains constant (4) None of the above

**Last Answer :** The speed of a three-phase induction motor is controlled by variable voltage variable frequency control (i.e. keeping V/f constant). As the frequency is reduced, the slip at maximum torque Increases

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**Description :** The number of poles of 8/6 stepper motor can be :

**Last Answer :** The number of poles of 8/6 stepper motor can be : 4

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**Description :** In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at half full load in N -m is :

**Last Answer :** In a 2 kW, 200 V, 1000 rpm. DC series motor the torque at full load was found to be 0.3 N -m. The torque at half full load in N -m is : 0.075

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**Description :** For using regenerative breaking, the most suitable motor is : (A) DC series motor (B) Slip ring induction motor (C) Squirrel cage induction motor (D) Synchronous motor

**Last Answer :** For using regenerative breaking, the most suitable motor is : Slip ring induction motor

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**Description :** Torque developed by a three-phase, 400V, induction motor is 100 N -m. If the applied voltage is reduced to 200-V, the d'veloped torque will be

**Last Answer :** Torque developed by a three-phase, 400V, induction motor is 100 N -m. If the applied voltage is reduced to 200-V, the d'veloped torque will be 25 N -m

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**Description :** The slip of 400 V, three phase, 4 -pole induction motor when rotating at 1440 rpm is

**Last Answer :** The slip of 400 V, three phase, 4 -pole induction motor when rotating at 1440 rpm is 4 percent

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A 400 V, 50 Hz three-phase induction motor rotates at 1440 rpm on full -load. The motor is wound for

**Description :** A 400 V, 50 Hz three-phase induction motor rotates at 1440 rpm on full -load. The motor is wound for

**Last Answer :** A 400 V, 50 Hz three-phase induction motor rotates at 1440 rpm on full -load. The motor is wound for 4 poles

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**Description :** The function of a brush and commutator arrangement in a dc motor is to (1) produce unidirectional torque (2) produce unidirectional current in the armature (3) help in changing the direction of rotation of the armature (4) reduce sparking

**Last Answer :** The function of a brush and commutator arrangement in a dc motor is to produce unidirectional torque

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**Description :** The speed of a 2-pole, 3-phase stepper motor operated by 1200 pulses/min (A) 100 rpm (B) 200 rpm (C) 400 rpm (D) 800 rpm

**Last Answer :** The speed of a 2-pole, 3-phase stepper motor operated by 1200 pulses/min 200 rpm

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**Description :** In a split-phase induction motor, the resistance/reactance ratios of windings are such that (A) current in the auxiliary winding leads the current in the main winding (B) current in the ... (C) both windings develop the same starting torque (D) both windings develop high starting current

**Last Answer :** In a split-phase induction motor, the resistance/reactance ratios of windings are such that current in the auxiliary winding leads the current in the main winding

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