116 views

1 Answer

Answer :

Short-circuiter is used in repulsion start induction run motor.

Like 0 like

Please log in or register to answer this question.

Related questions

94 views

Last Answer : The repulsion-start induction-run motor is used because of high starting torque.

1 answer
165 views

Last Answer : In a two value capacitor motor, the capacitor used for running purposes is paper spaced oil filled type.

1 answer
149 views

Last Answer : The motor used on small lathes is usually single-phase capacitor run motor.

1 answer
111 views

Last Answer : A shaded pole motor can be used for toys, hair dryers, circulators etc.

1 answer
892 views

Last Answer : A centrifugal switch is used to disconnect starting winding when motor has picked up about 50 to 70 per cent of rated speed.

1 answer
2 views

Description : How much money should I ask for our used dryer?

Last Answer : I googled and it looked like people ask $400 to $600 for the washer dryer set, but I didn't click and see how old they are. So, I guess you could ask $200-$300 maybe? I really have no knowledge of ... eBay and Craig's list, and see if you can find some competition to get a rough idea for your area.

1 answer
1 view

Description : Bull riding vest?

Last Answer : answer:They make bull riding vests? Wow, I learn so much here!!! Have you tried eBay?

1 answer
15 views

Description : Used Bicycles

Last Answer : Most people are apprehensive and reluctant to buy hand-me-downs, especially when it comes to items with which their lives have to depend on - a prime example of which is a bicycle. Compared to other ... also give you an estimate of the repair costs. Most of the time, shops do inspections for free.

1 answer
7 views

Description : Where are portable screw compressors used?

Last Answer : Where are portable screw compressors used? The use of a portable screw air compressor in road, construction, mining and installation works indicates that its area of practical use is ... with these important, but fairly simple requirements will significantly lengthen the life of your compressor.

1 answer
5 views

Description : How is silicone cookware used?

Last Answer : How is silicone cookware used? Every year silicone dishes are more and more popular among housewives, but the cost of such dishes is not high. Of course, not all dishes are made of ... counterfeits. Remember, real silicone cookware has no rubber smell and cannot cost less than a hundred rubles.

1 answer
173 views

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.

1 answer
311 views

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.

1 answer
218 views

Description : State the insulating materials used in motor. Write temperature class and withstand temperature ranges for them. 

Last Answer : The insulating materials used in motor are as belows: 1. Cotton, 2. Silk, or paper, 3. Press board, 4. Resins 5. PVC 6. Cellulose-Fiber, 7. Enameled coating, etc  ... Over 180° Mica, porcelain, ceramics, glass quartz, asbestos, treated glass fiber or treated asbestos. etc.

1 answer
206 views

Description : Select insulating materials for following parts : (i) Insulation between heating element and base plate of electric iron. (ii) Insulation used over copper or aluminium conductor used for making coils. (iii) Transformer bushings. (iv) Insulation between transmission line and pole.

Last Answer : Parts Insulating Materials  Insulation between heating element and base plate of electric iron. Mica Insulation used over copper or aluminium conductor used for making coils.  ... Transformer bushings Porcelain  Insulation between transmission line and pole. Porcelain

1 answer
225 views

Description : State the material used for making (1) Magnetic Core (2) Fuse element  

Last Answer : The material used for making of:  (1) Magnetic Core : Iron, cobalt, Nickel, CRGO, HRGO , silicon steel  (2) Fuse Element: Tin- lead wire, Tinned copper wire 

1 answer
103 views

Description : State different types of holders used in wiring installation.

Last Answer : Following types of holders used in wiring installation: 1. Pendent Holder 2. Batten Holder 3. Angle holder 4. Screwed holder 

1 answer
111 views

Description : List any four materials used for pattern making

Last Answer : The various types of materials used are as follows: 1. Wood 2. Metal. 3. Plastic. 4. Plaster. 5. Wax.

1 answer
96 views

Description : List any four accessories used on lathe.

Last Answer : The various accessories used in lathe are as follows. 1) Lathe centers 2) Carriers or driving dog 3) catch plates 4) Chucks 5) Face plates 6) Angle plates 7) Mandrels 8) Rests

1 answer
141 views

Description : State properties of conductor material used for overhead conductor. 

Last Answer : Following are the properties of conductor material:-   1. High conductivity :- Material should have high conductivity 2. High mechanical strength:- Material should have sufficiently high mechanical strength ... available & less costly. 9. Scrap Value: - Material should have high scrap value. 

1 answer
134 views

Description : Enlist the luminaries used in factory lighting and lux level required in various areas.

Last Answer : Area Luminaries Lux level Office building Fluorescent tube, LED, CFL 500 lux Testing centre Fluorescent tube, LED, CFL 400 to 500 lux Workshop/work place Halogen ... , LED, CFL, Projector lamp, filament lamp, Halogen Lamp, Metal Halide lamp etc Above 600 Lux

1 answer
185 views

Description : State the different types of outdoor flood lighting and where are they used.

Last Answer : There are three types of projectors used for flood lighting :  a) Narrow beam Projector b) Medium angle Projector c) Wide angle Projector a) Narrow beam Projectors: - Light beam with such ... yards, stadiums, car parking area etc. 3) It is used for illuminating advertisements, boarding's etc.

1 answer
151 views

Description : State functions of ; i) Cable box ii) Guard wire iii) Shackle insulator iv) Stay wire used in service connection

Last Answer : i) Function of Cable box: To hold and inspect incoming and outgoing terminals  ii) Function of Guard wire : A grounded conductor placed beneath an overhead transmission line in order to ground ... in service connection: To give mechanical Support to pole, line and prevent leakage current if any

1 answer
156 views

Description : State starters used for i) 3-Ph squirrel cage induction motor (3HP) ii) D.C. motor 

Last Answer : Name the starters used for following motors : i) 3 H.P. 3-Ph squirrel cage I.M: i) DOL starter OR ii) Star-Delta Starter OR ii) Auto transformer starter OR iii) Soft start starter.  ii) D.C Shunt Motor : 1) Armature resistance starter (Three Point Starter) OR 2) Four Point Starter 

1 answer
129 views

Description : Give the classification of the errors used in measuring instrument & state the reason for their occurrence.

Last Answer : Types of errors in measuring instruments:  A) Gross error: These are due to mistakes on the part of person using the instrument.  B) Systematic Error:  i) Instrumental Error: These ... multiplying factor.  C) Random error: These persist even after gross and systematic errors are removed. 

1 answer
219 views

Description : Name the material used for :- (i) Moving coil (ii) Permanent magnet in PMMC instrument.

Last Answer : (i) Material used for Moving coil: Copper, Aluminum( some times)  (ii) Permanent magnets are made of special alloys such as :  Aluminum-Nickel-Cobalt (Alnicos)  Strontium-Iron  Neodymium-Iron-Boron  Samarium-Cobalt.

1 answer
90 views

Description : State the use of shunt and series resistance used in extension of meter.

Last Answer : Use of shunt and series resistance: i) Use of shunt: To extend the range of Ammeter. ii) Use of series resistance: To extend the range of Voltmeter.

1 answer
174 views

Description : State the material used for moving coil and former for PMMC instruments. 

Last Answer : Material Used for Moving Coil and Former for PMMC Instruments:  Material used for moving coil: Copper  Material used for Former: Aluminium

1 answer
175 views

Description : Why common emitter configuration is commonly used?

Last Answer : Common emitter configuration is commonly used for amplifications because 1. The common emitter configuration (CE) provides maximum voltage and current gain and hence provides maximum power gain. The ... automatic impedance matching maximum power transfer will take place from one stage to other.

1 answer
1.2k views

Description : Which of the following device is used for coupling microwave energy?  A) Resonator B) Waveguide C) Loop D) Antenna

Last Answer : A

2 answers
113 views

Description : Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO 

Last Answer : Which of the following thyristors can be used for high frequency of operation? A) TRIAC B) DIAC C) SCR D) GTO 

1 answer
2.6k views

Description : Permanent magnet moving coil instruments are used for

Last Answer : PMME are mostly used for measuring voltage and current.

2 answers
443 views

Description : Light triggering is mainly used in

Last Answer : Light triggering is mainly used in High voltage direct current transmission

1 answer
5.4k views

Description : Shunt compensation in an EHV line is used to (A) Improve stability. (B) Improve the voltage profile. (C) Reduce the fault level. (D) Substitute for synchronous phase modifier.

Last Answer : Shunt compensation in an EHV line is used to Improve the voltage profile.

1 answer
65 views

Description : Taskbar is used for (A) Navigation program (B) Switching between program (C) Start a program (D) All of above

Last Answer : Taskbar is used for (A) Navigation program (B) Switching between program (C) Start a program (D) All of above

1 answer
137 views

Description : Wave trap is used to trap waves of:  (A) Power frequencies (B) Higher frequencies entering generator or transformer units (C) All of the above (D) None of the above

Last Answer : Wave trap is used to trap waves of: Higher frequencies entering generator or transformer units

1 answer
555 views

Description : A relay used for protection of motors against overload is :  (A) Impedance relay (B) Electromagnetic attraction type (C) Thermal relay (D) Buchholz's relay

Last Answer : D

2 answers
115 views

Description : Earthing switch is used for?  (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above 

Last Answer : Earthing switch is used for?  (A) Measuring of safety voltage (B) Protection of equipment from ground faults (C) Discharging residual energies (D) All of the above 

1 answer
3.4k views

Description : A _________ is used to measure the stator % winding temperature of the generator.  (A) Thermocouple (B) Pyrometer (C) Resistance thermometer (D) Thermometer

Last Answer : A Resistance thermometer is used to measure the stator % winding temperature of the generator. 

1 answer
83 views

Description : As per Electricity Act, ____________means any line which is used for carrying electricity for any purpose.  (A) Electric line (B) Transmission line (C) All of the above (D) None of the above

Last Answer : As per Electricity Act, Electric line means any line which is used for carrying electricity for any purpose. 

1 answer
383 views

Description : Which circuit is used as amplitude comparator?

Last Answer : Schmitt trigger circuit is used as amplitude comparator.

1 answer
97 views

Description : Auto reclosing is used in case of

Last Answer : Auto reclosing is used in case of air blast C.B.

1 answer
522 views

Description : The self GMD method is used to evaluate

Last Answer : The self GMD method is used to evaluate inductance and capacitance

1 answer
120 views

Description : The IC chips, used in computers, is made of  (1) Iron oxide (2) Silicon (3) Graphite (4) Silica

Last Answer : 2 These are made on silicon wafers which is aa semi conductor. ...

2 answers
1.1k views

Description : The motor used for electric traction is  (1) D.C. shunt motor (3) D.C. series motor  (2) D.C. compound motor (4) Synchronous motor

Last Answer : The motor used for electric traction is D.C. series motor

1 answer
630 views

Description : A negative sequence relay is used for protection of  (1) Generator (3) Motor (2) Transformer (4) Long Transmission lines

Last Answer : A negative sequence relay is used for protection of Generator 

1 answer
98 views

Description : Spot welding is used for (1) Thin metal (3) Castings only (2) Rough and irregular surface (4) Thick sections

Last Answer : Spot welding is used for Thin metal

1 answer
409 views

Description : The material used in liquid fuses is  (1) SF6 (3) carbon tetra chloride (2) distilled water (4) transformer oil

Last Answer : The material used in liquid fuses is  carbon tetra chloride

1 answer
3.1k views

Description : IDMT relays are used to protect the transformer against :  (A) Internal short -circuits (B) Open circuits (C) External short circuits (D) Oil leakage

Last Answer : IDMT relays are used to protect the transformer against : External short circuits

1 answer
390 views

Description : Which of the following gates can be used to realize all possible combinational logic functions?  (i) OR gate (ii) NOR gate (iii) Exclusive OR gate (iv) NAND gate (v) AND gate  (A) (iii), (iv) and (v)  (B) (i), (iii) and (iv)  (C) (ii) and (iv)  (D) (i) and (v)

Last Answer : Which of the following gates can be used to realize all possible combinational logic functions?  (i) OR gate (ii) NOR gate (iii) Exclusive OR gate (iv) NAND gate (v) AND gate  (A) (iii), (iv) and (v)  (B) (i), (iii) and (iv)  (C) (ii) and (iv)  (D) (i) and (v)

1 answer
121 views

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

1 answer
...