Please Log in or Register for more.


102 views

1 Answer

Answer :

Regenerative method of braking is based on that back e.m.f. is equal to the applied voltage.

Like 0 like

Please log in or register to answer this question.

Related Questions



Last Answer : Plugging method of braking is generally used in elevators.

Show More

66 views 1 answer








Last Answer : Shunt motors,  Series motors, Compound motors

Show More

100 views 1 answer








Last Answer : During rheostat braking of D.C. series motors motor is run as a generator.

Show More

85 views 1 answer







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

Show More

91 views 1 answer







Is phenol formaldehyde resin(RESIONOL EPF 87120) suitable for brake liners/Braking applications

Show More

2 views 0 answers







Explain in brief how anti-lock braking system works
Last Answer : An ABS is a system on motor vehicles which prevents the wheels from locking while braking stopping safely is one of the most important functions a motor vehicle can perform. Diagram: ... to decrease the pressure on the braking circuit, effectively reducing the braking force on that wheel.

Show More

94 views 1 answer








Last Answer : The braking retardation is usually in the range 10 to 15 km phps.

Show More

244 views 1 answer








Last Answer : The main disadvantage of the Ward-Leonard control method is high initial cost, high maintenance cost, low efficiency at light loads.

Show More

102 views 1 answer








Last Answer : For constant torque drive armature voltage control speed control method is preferred.

Show More

177 views 1 answer







How to Choose a Birth Control Method
Last Answer : How to Choose a Birth Control Method Birth control methods depend on the couple's needs and commitment to the method. Some couples just need to prevent pregnancy while others wish to avoid sexually- ... unplanned sex, a broken condom or failure to take birth control pills two days in a row.

Show More

12 views 1 answer







How to Use the Rhythm Method
Last Answer : How to Use the Rhythm Method The rhythm method is one of the many natural ways of birth control. This technique is based on the length of your menstrual cycle. Here are some tips you can ... their phases. There are numerous natural birth control techniques. Use the one the best suits your needs.

Show More

6 views 1 answer







Explain the thermal triggering method of SCR. Enlist different triggering methods of SCR.
Last Answer : Types of Triggering: 1) Forward voltage triggering 2) Thermal triggering (Temperature triggering) 3) Radiation triggering (Light triggering) 4) dv/dt triggering 5) Gate triggering ... generated leakage current increases. This current gets multiplied internally and thyristor is turned on. 

Show More

220 views 1 answer







Illustrate with neat wiring diagram a single lamp control by two point method.
Last Answer : Single lamp control by two point method:  This system is commonly used for stair case wiring. It consists of two way switches (the switch operates always in one of the two possible positions) the ... the person will change the position of switch S2, so that the lamp will be switched OFF'.

Show More

273 views 1 answer







Draw and explain vacuum impregnation method of varnishing.

Show More

64 views 0 answers







A parallel RLC circuit has the node equation Determine v(t) using the phasor method.
Last Answer : A parallel RLC circuit has the node equation Determine v(t) using the phasor method.

Show More

142 views 1 answer







Describe fire extinguishing method.
Last Answer : (i) Carbon Dioxide Extinguishing Systems  This type is the most suitable & widely recommended one for electrical fires. Carbon dioxide (CO2) extinguishers are normally Class C ... particles to expand chemically inhibiting combustion and expelling the oxygen thereby smothering the flames.

Show More

69 views 1 answer







Draw and explain bulk correction method for power factor & control.
Last Answer : Bulk correction method for power factor & control: i) Here individual starter controls the capacitors located at distribution panel. ii) Centralized compensation is employed in large industrial plants where many ... capacitor units in steps to maintain P.F. more than preset limit (0.95). 

Show More

113 views 1 answer







Explain energy conservation method in lighting system by using installation of separate transformer / servo stabilizer.
Last Answer : Energy conservation techniques by installation of separate transformer / servo stabilizer: The luminous efficiency of lamps depends upon the voltage applied across the terminals. It gives its best ... the voltage constant in that installation for giving best luminous efficiency of lamps.

Show More

169 views 1 answer







Merits of two wattmeter method
Last Answer : Advantages of Two Wattmeter Method for 3-Phase Power Measurement: 1) It is used for balanced as well as unbalanced load. 2) For the star type load, it is not necessary to ... reactive volt-amperes for balanced loads also. 7) The circuit connections are independent of load connection.

Show More

153 views 2 answers







Write one advantage and one disadvantage each for spring control method and gravity control method.
Last Answer : Advantages of Spring Control Method: 1) The spring-controlled meters may be used in any position. 2) In some instruments, springs can be used as current leads. 3) As springs are light in weight ... only. 2) Scale is non-uniform. 3) Control weights add to the weight of instrument.

Show More

720 views 2 answers







State any two disadvantages of one wattmeter method of measurement of 3 phase power.
Last Answer : State any two disadvantages of one wattmeter method of measurement of 3 phase power. Disadvantages of one wattmeter method:- 1. Only used for balanced load 2. It can not be used for ... connection then neutral point must be available 4. Delta connection must be opened to connect current coil.

Show More

1.8k views 1 answer







With neat diagram explain calibration of energy meter by direct loading method.
Last Answer : Calibration of Energy Meter by Direct Loading Method:  There are three methods for testing/calibration:  1. Long period dial test  2. Using rotary sub- standard meter  3. Using precision grade instruments  All ... of substandard meter in kWh  Then % error = [(D - DS)/DS] x 100

Show More

1.1k views 1 answer







Explain V- I method of measurement of medium resistance. 
Last Answer : In this method, use suitable source, ammeter and voltmeter and connect them as shown in the above diagram. Take reading of voltmeter and ammeter, then value of resistance = R = V/I Ω To minimise the error take 4 to 5 observation for the same resistance and take their average.

Show More

116 views 1 answer







Explain spring control method with neat diagram.
Last Answer : Spring Control Method: As shown in the figure the inner ends of the both springs are attahced to the spindle ,while outer end of upper spring is attached to the lever and outer end of ... the springs are twisted in opposite direction to the motion of pointer and produce controlling torque.

Show More

414 views 1 answer







List one advantage and one disadvantage of one wattmeter method. 
Last Answer : Advantages:  1) Only one wattmeter is used.  2) Less number of connections.  3) Cost required is less.  Disadvantages:  1) Used only for 3- Φ balanced load and not for ... be accessible for connecting the Pressure coil.  3) Delta connection must be opened to connect current coil. 

Show More

1.4k views 1 answer







List any four errors in induction type energy meter. Give method of compensation for each.
Last Answer : Errors in Induction Type Energy Meter with their Compensation:  1) Error due to friction: This error can be compensated by the additional shading band provided on the shunt electromagnet.  2) Phase ... error: This error can be compensated by providing a flux diverter' to the current magnet. 

Show More

1.9k views 1 answer







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

Show More

518 views 1 answer







The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is (A) zero (B) 0.5 (C) between zero and 0.5 (D) between 0.5 and unity
Last Answer : The power consumed by a balanced 3-ph load is measured by two-wattmeter method. The meter readings are 8 kW and 4 kW. The power factor of the load is between 0.5 and unity

Show More

171 views 1 answer







Compared to Gauss-Seidel method, Newton-Raphson method takes : A. less number of iterations and more time per iteration B. less number of iterations and less time per iteration C, more number of iterations and more time per iteration D. more number of iterations and less time per iteration
Last Answer : Compared to Gauss-Seidel method, Newton-Raphson method takes : A. less number of iterations and more time per iteration B. less number of iterations and less time per iteration ... of iterations and more time per iteration D. more number of iterations and less time per iteration

Show More

1.8k views 1 answer







The bridge method commonly used for finding mutual inductance is (A) Heaviside Campbell bridge (B) Schering bridge (C) De Sauty bridge (D) Wien bridge
Last Answer : The bridge method commonly used for finding mutual inductance is Heaviside Campbell bridge

Show More

795 views 1 answer








Last Answer : Plugging braking method can bring the locomotive to dead stop.

Show More

85 views 1 answer








Last Answer : Speed control by Ward Leonard method gives uniform speed variation in both directions.

Show More

129 views 1 answer








Last Answer : Annual depreciation as per straight line method, is calculated by the capital cost minus the salvage value, is divided by the number of years of life.

Show More

71 views 1 answer







What is the bisection method?

Show More

89 views 0 answers







Why do we use Gauss elimination method?

Show More

91 views 0 answers







What is Newton Raphson Method example?

Show More

74 views 0 answers







The progressive operation of the contactors marked 'A' provide the winch shown in the illustration with __________. EL-0102 A. accumulation B. dynamic braking C. acceleration D. regenerative braking
Last Answer : Answer: C

Show More

4 views 1 answer







A motor using a rheostat in the motor circuit to vary the speed is called a ____________. A. squirrel-cage induction motor B. regenerative braking motor C. wound-rotor induction motor D. synchronous motor
Last Answer : Answer: C

Show More

3 views 1 answer







What Is Meant By Regenerative Braking?
Last Answer : When the supply is cutt off for a running motor, it still continue running due to inertia. In order to stop it quickly we place a load(resitor) across the armature winding and the motor should ... and due to load the motor stops quickly.This type of breaking is called as Regenerative Breaking .

Show More

4 views 1 answer







What is meant by regenerative braking?
Last Answer : When the supply is cut off for a running motor, it still continue running due to inertia. In order to stop it quickly we place a load (resistor) across the armature winding and the motor should ... and due to load the motor stops quickly. This type of breaking is called as Regenerative Breaking .

Show More

5 views 1 answer







_____ technology helps to stop a combustion engine when the vehicle pulls to a stop and restart it when driver accelerates. • Start stop technology • Passive braking technology • Regenerative braking technology • Internal cooling technology
Last Answer : • Regenerative braking technology

Show More

16 views 1 answer







Regenerative braking involves : a) Nano fibers that repair the surface of brake pads b) Reducing the amount of friction c) Reclaiming heat from the brake and using it for power d) All of the above
Last Answer : c) Reclaiming heat from the brake and using it for power

Show More

22 views 1 answer







Regenerative braking (A) Can be used for stopping a motor. (B) Cannot be easily applied to DC series motors. (C) Can be easily applied to DC shunt motors (D) Cannot be used when motor load has overhauling characteristics.
Last Answer : Ans: B Because reversal of Ia would also mean reversal of field and hence of Eb

Show More

16 views 1 answer







Explain regenerative braking for D.C. series motor.
Last Answer : Schematic diagram of regenerative braking of D.C. series :-  Explanation of regenerative braking: During normal running, motors are connected in parallel with field winding in series ... For final stop mechanical braking is applied. External Resistances are connected to limit the current.

Show More

163 views 1 answer







In a regenerative braking, which of the following is generally true?  (a) Back e.m.f. in the motor exceeds the applied voltage (b) Back e.m.f. is less than the applied voltage ... dissipated in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 
Last Answer : In a regenerative braking, which of the following is generally true?  (a) Back e.m.f. in the motor exceeds the applied voltage (b) Back e.m.f. is less than the applied voltage ... in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 

Show More

90 views 1 answer







A DC chopper is used for regenerative braking of a separately excited DC motor. The DC supply voltage is 400V. The armature current during regenerative braking is kept constant at 300 A with negligible ripple. For a duty cycle of 60% ... to the DC supply is  (a) 78 kW (b) 58 kW (c) 38 kW (d) 48 kW
Last Answer : 48

Show More

418 views 2 answers







Regenerative braking can: (A) be used for stopping a motor (B) not be easily applied to DC series motors (C) be easily applied to DC shunt motors (D) not be used for heavy duty -cycle motors
Last Answer : Regenerative braking can: not be easily applied to DC series motors

Show More

60 views 1 answer







Operation of blast furnace stove is based on the principles of a __________ furnace. (A) Regenerative (B) Recuperative (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (A) Regenerative

Show More

9 views 1 answer







What is the full form of AS/RS in FMS? a.Automated storage and recovery system b.Automatic storage and rotary system c.Automated storage and retrieval system d.Automated storage and regenerative system
Last Answer : c.Automated storage and retrieval system

Show More

1 view 1 answer







Which one of the following cell I totipotent and responsible for regenerative capacity in sponges ?
Last Answer : Which one of the following cell I totipotent and responsible for regenerative capacity in sponges ? ... B. Thesocytes C. Archaeocytes D. Scleroblast

Show More

1 view 1 answer






Show More⇦ PreviousNext ⇨