Draw construction of DC servomotor.

Draw construction of DC servomotor. 
by

1 Answer

Answer :

DC servomotor:

image

by

Related questions

List applications of servomotor.

Description : List applications of servomotor.

Last Answer : Applications of Servomotor: 1) Computers 2) Robotics and toys 3) CD/DVD players 4) Textile industries 5) Instrument servos 6) Tracking and guidance system 7) Self-balancing recorders 8 ... 9) Process controllers 10) Electromechanical actuators 11) Air-craft control system 12) Programming device

Explain construction and working of AC servomotor.

Description : Explain construction and working of AC servomotor.

Last Answer : Construction of AC Servo Motor: AC servo motor is mainly composed of a stator and a rotor. Laminated stator core is usually made of silicon steel. Two phase windings are placed in the stator slots at 90 degree ... on rotor. Due to the force or torque acting on the rotor, it is set in motion. 

Explain construction and working of D.C. servomotor.

Description : Explain construction and working of D.C. servomotor.

Last Answer : Construction and Working of D.C. Servo Motor: The D.C. motor that is used in servo-mechanism is called a D.C. servo motor. There are three main types of D.C. servo motor ... magnet materials used in PM motors eliminates the need for interpoles due to their excellent commutation characteristics. 

The torque, in a _____________is proportional to the square of the armature current (A) DC shunt motor (B) stepper motor (C) 2-phase servomotor (D) DC series motor

Description : The torque, in a _____________is proportional to the square of the armature current (A) DC shunt motor (B) stepper motor (C) 2-phase servomotor (D) DC series motor

Last Answer : (D) DC series motor

The most suitable servomotor for low power applications is (A) a dc series motor. (B) a dc shunt motor. (C) an ac two-phase induction motor. (D) an ac series motor.

Description : The most suitable servomotor for low power applications is (A) a dc series motor. (B) a dc shunt motor. (C) an ac two-phase induction motor. (D) an ac series motor.

Last Answer : (B) a dc shunt motor.

Draw the block diagram of PLC.

Description : Draw the block diagram of PLC.

Last Answer : Block diagram of PLC and input/output devices used for PLC Input/output devices - The input module has bank of terminals for physically connecting input devices, like push buttons, limit switches etc. ... is to translate signals from the PLC's CPU into a form that the output device can use.

Draw block diagram of PID controller

Description : Draw block diagram of PID controller

Last Answer : Block diagram of PID Controller:

Draw a block diagram of digital output module of PLC.

Description : Draw a block diagram of digital output module of PLC.

Last Answer : Block diagram of digital output module of PLC:

Draw power and control circuit for definite time-limit starter for slip-ring induction motor. Explain its working.

Description : Draw power and control circuit for definite time-limit starter for slip-ring induction motor. Explain its working.

Last Answer : Definite Time-limit Starter for Slip-ring Induction Motor: This starter is used for automatic control of acceleration of slip-ring induction motor at the time of starting. In this starter, the ... each phase, shorting the rotor winding terminals and final acceleration of the motor takes place. 

Draw block diagram of proportional controller.

Description : Draw block diagram of proportional controller.

Last Answer : Block diagram of Proportional Controller:

Draw ladder diagram for following sequence: i) When NO START Pushbutton is pressed Green light is on. ii) When NC STOP Pushbutton is pressed Red light is on. Green light goes off.

Description : Draw ladder diagram for following sequence: i) When NO START Pushbutton is pressed Green light is on. ii) When NC STOP Pushbutton is pressed Red light is on. Green light goes off.

Last Answer : ladder diagram

What is servomotor?

Description : What is servomotor?

Last Answer : The motors used in automatic control systems or in servomechanism are called servomotors. They are used to convert electrical signal into angular motion.

An a.c. tachometer is just a ________with one phase excited from the carrier frequency. (A) two-phase A.C. servomotor (B) two-phase induction motor (C) A.C. operated universal motor (D) hybrid stepper motor.

Description : An a.c. tachometer is just a ________with one phase excited from the carrier frequency. (A) two-phase A.C. servomotor (B) two-phase induction motor (C) A.C. operated universal motor (D) hybrid stepper motor.

Last Answer : Ans: D This is a special purpose machine whose stator coil can be energized by electronically switched current.

How can you make a servomotor go clockwise or counter-clockwise or stop?

Description : How can you make a servomotor go clockwise or counter-clockwise or stop?

Last Answer : To go clockwise, send to the servo a set of pulse widths less than 1,500 microseconds. To go counter-clockwise, send to the servo a set of pulse widths greater than 1,500 microseconds. To stop, send to the servo a set of pulse widths equal to 1,500 microseconds.

A.C. servomotor is basically a ?

Description : A.C. servomotor is basically a ?

Last Answer : A.C. servomotor is basically a two phase induction motor.

A.C. servomotor resembles ?

Description : A.C. servomotor resembles ?

Last Answer : A.C. servomotor resembles two phase induction motor.

Explain count up (CTU) instruction with timing diagram.

Description : Explain count up (CTU) instruction with timing diagram.

Last Answer : The CTU is an instruction that counts false-to-true rung transitions. Rung transitions can be caused by events occurring in the program. When rung conditions for a CTU instruction have made a false-to-true ... of Counter up(CTU) Instruction: Too many uploads - please try again in an hour

Write the ladder program for 24 hour clock.

Description : Write the ladder program for 24 hour clock.

Last Answer : Ladder Program for 24 hour clock:

State the function of PLC memory w.r.t. types, speed of execution.

Description : State the function of PLC memory w.r.t. types, speed of execution.

Last Answer : PLC memory cab be divided into two major types: 1) System memory: a) Executive Memory: The executive is a permanently stored collection of programs that are considered part of the system itself. ... RAM memory is fastest amongst all type of memory. Flash ROM memory is faster than ROM memory. 

Develop the control circuit for star-delta starter used for starting a 3 ∅ induction motor.

Description : Develop the control circuit for star-delta starter used for starting a 3 ∅ induction motor.

Last Answer : Control Circuit for Star-Delta Starter: 1) Automatic Star-Delta Starter: OR 2) Semi- automatic Star-Delta Starter:

Give the full form of SCADA & HMI.

Description : Give the full form of SCADA & HMI.

Last Answer : Full Form of SCADA and HMI:  SCADA:-Supervisory Control and Data Acquisition  HMI :- Human Machine Interface

State the function of seal in circuit w.r.t. PLC.

Description : State the function of seal in circuit w.r.t. PLC.

Last Answer : Standard Start-Stop-Seal circuit:  * The Start-Stop-Seal circuit is as shown in figure. The power circuit consists of 3ph load (Motor) connected by a main contactor (M) to 3-phase supply. The ... * When STOP is pressed, M gets de-energized and motor gets disconnected from supply.

List types of timers.

Description : List types of timers.

Last Answer : Types of Timers: Retentive Timers: 1. ON Delay 2. OFF Delay Non Retentive Timers: 1. ON Delay 2. OFF Delay

State the need of automation.

Description : State the need of automation. 

Last Answer : Need of Automation in Process : * To fulfill the demand of product at right time. * To reduce the human errors and involvement of human being in the process. * For better productivity. * For better ... of process. * For better quality. * For reducing man power. * For reducing cost of product.

Develop power and control diagram for secondary frequency acceleration starter of slip ring induction motor.

Description : Develop power and control diagram for secondary frequency acceleration starter of slip ring induction motor. 

Last Answer : Power and Control Circuit diagram for secondary frequency acceleration starter of slip ring induction motor:

Explain UP counter instruction of PLC with suitable instruction.

Description : Explain UP counter instruction of PLC with suitable instruction.

Last Answer : The CTU is an instruction that counts false-to-true rung transitions. Rung transitions can be caused by events occurring in the program. When rung conditions for a CTU instruction have made a false-to-true ... accumulated count to zero. Counting can resume when rung 4 goes false again.

Differentiate between two-wire and three-wire control

Description : Differentiate between two-wire and three-wire control

Last Answer : Two-Wire Control  Three-Wire Control 1 The control component offers only two-wires for its connection in control circuit. The control components offer threewires for their connection in control ... using starter. The safe starting ensures the Novolt protection.  4

Explain pressure actuated switch with neat constructional diagram.

Description : Explain pressure actuated switch with neat constructional diagram.

Last Answer : Pressure actuated switch: A pressure actuated switch is a device designed to monitor a process pressure and provide an output when a set pressure (setpoint) is reached. A pressure actuated switch does this by ... range spring (e.g. if the nt is turned clockwise the trip pressure will be higher). 

List any two advantages and any two disadvantages of PLC.

Description : List any two advantages and any two disadvantages of PLC.

Last Answer : Advantages of PLC: i) Increased productivity ii) Increased product quality iii) Increased flexibility and convertibility iv) Reduced manpower v) Reduced cost of product vi) Better inventory control vii) Increased ... v) PLCs are not very good at handling large amount of data, or complex data.

Differentiate between power and control wiring

Description : Differentiate between power and control wiring

Last Answer : Power wiring Control wiring 1 Used for connecting load to main power supply through appropriate switchgear and protecting devices such as overload relay contacts Used for ... can be used for connecting control circuit as control circuit does not carry higher current.

List types of memory. Explain any one type of memory in brief.

Description : List types of memory. Explain any one type of memory in brief.

Last Answer : Types of Memories in PLC:  i) Executive Memory  ii) Scratch Pad Memory  iii) Data Table a) Input image memory b) Output image Memory c) Internal bits/ registers/ words  ... storage for programmed instructions entered by the user. The user program area also stores the control program.

List any four names of optial sensors

Description : List any four names of optial sensors

Last Answer : Optial sensors: i) Photodiodes ii) Phototransistors iii) LDRs iv) Photovoltaic cells v) Optical encoder vi) Scintillation counter vii) Photoionization detector viii) Photographic plates

State any two input and output devices of PLC

Description : State any two input and output devices of PLC

Last Answer : Input Devices of PLC: i) Selector switches ii) Push buttons iii) Binary encoders iv) Mechanical/magnetic Limit switches v) Inductive/ capacitive/optical proximity switches vi) Analog transducers ... /Lamps v) Solenoids vi) Continuous/ discrete valves vii)Analog/digital indicators/recorders etc.

List any two ratings of digital input and digital output module each.

Description : List any two ratings of digital input and digital output module each.

Last Answer : Ratings of Digital Input Module: i) Rated voltage & current: +24V DC at 4mA/120V AC at 6mA/230V AC at 9mA ii) Specified operational voltage range: 0-30V DC/ 264V AC. iii) Absolute maximum input voltage: + ... / 2A for relay type/0.5A AC vi) Rated current/common: 6A DC/8A for relay type/0.5A AC

Explain concept of capacitive type proximity switch with neat schematic diagram.

Description : Explain concept of capacitive type proximity switch with neat schematic diagram.

Last Answer : Capacitive type proximity switch: A capacitive proximity switch is device that senses presence of metallic or nonmetallic objects. The internal circuit consists of an oscillator, threshold detection stage and ... in oscillation amplitude is detected and output switching device is turned on. 

Draw the construction of BJT (NPN) and explain its working principle. State and explain different operating regions.

Description : Draw the construction of BJT (NPN) and explain its working principle. State and explain different operating regions.

Last Answer : Construction of BJT (NPN): Working of NPN Transistor : The circuit diagram of the NPN transistor is shown in the figure below. The forward biased is applied across the emitter-base ... Zero with input current is Zero transistor in cut off. In this region transistor act as open switch

Draw the construction and explain working principle of PMMC instruments

Description : Draw the construction and explain working principle of PMMC instruments

Last Answer : Working: When current passes through the coil a deflecting torque is produced. This deflecting torque is produced due to interaction between magnetic field produced by permanent magnet ... equilibrium; this is possible only when the controlling torque becomes equal to the deflecting torque 

Draw the construction of CRT. Write two materials used for CRT display screen.

Description : Draw the construction of CRT. Write two materials used for CRT display screen. 

Last Answer : Two materials used for CRT display screen: The role of this part is to display where the electrons are hitting the CRT. It is a screen coated with a material that emits light when struck by electrons. Zinc sulphide or Phosphorus are two commonly used materials. 

Draw and explain construction diagram of average responding voltmeter.

Description : Draw and explain construction diagram of average responding voltmeter.

Last Answer : Explain: The basic construction of average responding voltmeter is shown in above fig. at the input side of an unknown voltage to be measured is applied. The blocking capacitor is used to ... is connected in the bridge circuit. The bridge circuit consists of two diodes and two capacitors.  

Draw construction of PVC gang capacitor and describe it’s working.

Description : Draw construction of PVC gang capacitor and describe it’s working.

Last Answer :  Diagram Working  In plastic core capacitor, poly-vinyl chloride (PVC) type of plastic film is used as dielectric between the fixed & movable vanes instead of air. This increases ... & results in great reduction of size of capacitor in comparison with the air core capacitor.

Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode.

Description : Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode. 

Last Answer : Construction A PIN diode is made up of three semiconductor materials; two heavily doped P- and N- type material separated by an intrinsic (undoped) semiconductor (I) as shown in above figure ... . This advantage allows the PIN diode to process even weak signals.  Characteristics

Draw the construction diagram of air core inductor. List two applications

Description : Draw the construction diagram of air core inductor. List two applications

Last Answer : Applications: i. It is used for construction of IF and RF tuning coils. ii. It is used for interstage coupling.

Draw construction of Schottky diode and state it’s four applications.

Description : Draw construction of Schottky diode and state it’s four applications.

Last Answer : Applications :- 1. RF mixer and detector diode: 2. Power rectifier 3. Voltage clamping 4. Stand alone photovoltaic systems in order to prevent batteries from discharging purpose for the solar panels at night 5. Rectifiers in power supplies.

Draw and describe construction of LED .

Description : Draw and describe construction of LED .

Last Answer : Construction of LED Fig above shows the construction of LED. Here an N-type layer is grown on a substrate by a diffusion process. Then a thin P-type layer is grown on ... takes place. After passing through the P-region the light is emitted from the window provided at top.

Draw & describe construction of LDR

Description : Draw & describe construction of LDR

Last Answer : Description: 1. Photo resistors (or LDR) are manufactured from photo-conductive semiconductor materials such as cadmium sulphide (CdS), cadmium selenide (CdSe) and lead sulphide (PbS). 2 ... of photo resistors may be several mega ohms in total darkness and less than100Ω, when well illuminated.

Draw construction of Cartesian and cylindrical robots and explain their degree of freedoms.

Description : Draw construction of Cartesian and cylindrical robots and explain their degree of freedoms.

Last Answer : Diagram: DOF: A Cartesian coordinate robot (also called linear robot) is an industrial robot whose three principal axes of control are linear (i.e. they move in a straight line rather than ... rotation at its base around the two axes. The work envelope is in the shape of a cylinder.

Draw Lamont Boiler. Label the components and discuss the working and construction.

Description : Draw Lamont Boiler. Label the components and discuss the working and construction. 

Last Answer : 1. This is a modern high pressure, water tube boiler working on a forced circulation. 2. The circulation is maintained by a centrifugal pump, driven by a steam turbine, using steam from the ... required application. Lamont boilers generates 45 to 50 tones steam per hour at 130 bar with 5000 C.

Draw construction of Yagi-Uda antenna and explain.

Description : Draw construction of Yagi-Uda antenna and explain.

Last Answer : Explanation A Yagi-Uda antenna, commonly known as a Yagi antenna, is a directional antenna consisting of multiple parallel elements in a line, usually half-wave dipoles made of ... receiver with a transmission line and additional parasitic elements called reflector and one or more directors.

Draw and explain the construction and working of Dead Weight Tester.

Description : Draw and explain the construction and working of Dead Weight Tester.

Last Answer : Construction:- Deadweight Tester (DWT) is used for calibration of pressure gauges . A dead weight tester is an instrument that calibrates pressure by determining the weight of force divided by ... the error at each gauge reading and ensure that it is within the acceptable accuracy limits.