In a regenerative braking, which of the following is generally true?

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 (c) Kinetic energy of the motor is dissipated in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 
by

1 Answer

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 (c) Kinetic energy of the motor is dissipated in a resistance (d) Kinetic energy of the motor is dissipated through free wheeling diode across the motor 

by

Related questions

Which method of braking is generally used in elevators ?

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

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

Description : 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

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

Description : 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

What Is Meant By Regenerative Braking?

Description : 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 .

What is meant by regenerative braking?

Description : 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 .

_____ 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

Description : _____ 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

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

Description : 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

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.

Description : 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

Explain regenerative braking for D.C. series motor.

Description : 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.

A DC chopper is used for regenerative braking of a separately excited DC motor. The DC supply

Description : 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

Regenerative braking can:

Description : 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

Regenerative method of braking is based on that?

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

For using regenerative breaking, the most suitable motor is :

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

For which types of D.C. motor, dynamic braking is generally used ?

Last Answer : Shunt motors,  Series motors, Compound motors

Which motor is generally used in Tap Recorders?

Description : Which motor is generally used in Tap Recorders? A) universal motor B) reluctance motor C) split phase motor D) hysteresis motor

Last Answer : Which motor is generally used in Tap Recorders? A) universal motor B) reluctance motor C) split phase motor D) hysteresis motor

Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as

Description : Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as (A) One-third of their synchronous speed (B) One-fifth of their synchronous speed (C) One-seventh of their synchronous speed (D) One-ninth of their synchronous speed

Last Answer : Generally, Crawling in squirrel cage induction motors is tendency to run stably at speeds as low as One-seventh of their synchronous speed

Which D.C. motor is generally preferred for cranes and hoists ?

Last Answer : D.C. Series motor is generally preferred for cranes and hoists.

The starting resistance of a D.C. motor is generally?

Last Answer : The starting resistance of a D.C. motor is generally low.

In DC generators lamination core are generally made of?

Description : In DC generators lamination core are generally made of?

Last Answer : In DC generators lamination core are generally made of silicon steel.

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

Description : 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

Which one of the following cell I totipotent and responsible for regenerative capacity in sponges ?

Description : 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

Assertion : Epithelia are highly regenerative. Reason : When epithelia gets damaged they regenerate more repidly then other Tissue.

Description : Assertion : Epithelia are highly regenerative. Reason : When epithelia gets damaged they regenerate more repidly then other Tissue.

Last Answer : Assertion : Epithelia are highly regenerative. Reason : When epithelia gets damaged they regenerate more ... . If both Assertion & Reason are false.

Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Description : Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Last Answer : (1) Brain cells Explanation: Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.

Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Description : Which cells in our body have the least regenerative power? (1) Brain cells (2) Muscle cells (3) Bone cells (4) Liver cells

Last Answer : (1) Brain cells Explanation: Brain cells do not regenerate. Once lost, they do not come back. Research from Karolinska Institute in Sweden haves shown that the nerve cells of the brain remain the same throughout a person's life.

A form of regenerative repeater for transmitting signals over a long cable received through a relay in a clearer form. A. Active generator B. Active repeater C. Interpolator D. Audio generator

Description : A form of regenerative repeater for transmitting signals over a long cable received through a relay in a clearer form. A. Active generator B. Active repeater C. Interpolator D. Audio generator

Last Answer : C. Interpolator

Which of the following is a non-regenerative fixed bed catalytic reforming process? (A) Hydroforming (B) Thermofor catalytic reforming (C) Platforming (D) Hyperforming

Description : Which of the following is a non-regenerative fixed bed catalytic reforming process? (A) Hydroforming (B) Thermofor catalytic reforming (C) Platforming (D) Hyperforming

Last Answer : (C) Platforming

Platforming is a __________ process. (A) Moving bed (B) Fluidised bed (C) Non-regenerative & fixed bed (D) Regenerative

Description : Platforming is a __________ process. (A) Moving bed (B) Fluidised bed (C) Non-regenerative & fixed bed (D) Regenerative

Last Answer : (C) Non-regenerative & fixed bed

In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred (A) Through a metallic wall (B) By direct contact of hot flue gas with air (C) By heating an intermediate material (like chequor bricks) and then heating the air from this hot material (D) None of these

Description : In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred (A) Through a metallic wall (B) By direct contact of hot flue gas with air (C) By ... material (like chequor bricks) and then heating the air from this hot material (D) None of these

Last Answer : (C) By heating an intermediate material (like chequor bricks) and then heating the air from this hot material

Pot furnace which is either regenerative or recuperative, is used in the manufacture of (A) Glass (B) Stainless steel (C) Potteries (D) Refractory bricks

Description : Pot furnace which is either regenerative or recuperative, is used in the manufacture of (A) Glass (B) Stainless steel (C) Potteries (D) Refractory bricks

Last Answer : (A) Glass

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)

Description : 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

Which is a regenerative furnace? (A) Coke oven heating chamber (B) Open hearth furnace (C) Both (A) and (B) (D) Neither (A) nor (B)

Description : Which is a regenerative furnace? (A) Coke oven heating chamber (B) Open hearth furnace (C) Both (A) and (B) (D) Neither (A) nor (B)

Last Answer : (C) Both (A) and (B)

For a given set of operating pressure limits of a Rankine cycle, the highest, efficiency occurs for [GATE-1994] (a) Saturated cycle (b) Superheated cycle (c) Reheat cycle (d) Regenerative cycle.

Description : For a given set of operating pressure limits of a Rankine cycle, the highest, efficiency occurs for [GATE-1994] (a) Saturated cycle (b) Superheated cycle (c) Reheat cycle (d) Regenerative cycle. 

Last Answer : (d) Regenerative cycle. 

Types of waste heat exchanger are: a) Regenerative and recuperative burners b) Economizers c) Waste heat boilers d) All of the above

Description : Types of waste heat exchanger are: a) Regenerative and recuperative burners b) Economizers c) Waste heat boilers d) All of the above

Last Answer : All of the above

Apart from feed heating, what should a plant have to obtain a gain in thermal efficiency? a) Lubrication b) Differential heating c) Reheating cycles d) Regenerative cycles

Description : Apart from feed heating, what should a plant have to obtain a gain in thermal efficiency? a) Lubrication b) Differential heating c) Reheating cycles d) Regenerative cycles

Last Answer : c) Reheating cycles

Which components provide the regenerative feedback signal in the phase-shift oscillator?

Description : Which components provide the regenerative feedback signal in the phase-shift oscillator?

Last Answer : Resistor-capacitor networks.

What three functions does the transistor in a regenerative detector serve?

Description : What three functions does the transistor in a regenerative detector serve?

Last Answer : Oscillator, mixer, and detector.

Each ____________________ in an FDDI system acts as a regenerative repeater.

Description : Each ____________________ in an FDDI system acts as a regenerative repeater.

Last Answer : node

AS -10 (Accounting Standard on Fixed Assets) does not deal with accounting for the following items to which special considerations apply A. Forests, plantations and similar regenerative natural resources B. Wasting assets including material rights, expenditure on the exploration for and extraction of minerals, oil, natural gas and similar non-regenerative resources C. Expenditure on real estate development and livestock D. None of the above

Description : AS -10 (Accounting Standard on Fixed Assets) does not deal with accounting for the following items to which special considerations apply A. Forests, plantations and similar regenerative natural ... resources C. Expenditure on real estate development and livestock D. None of the above

Last Answer : D. None of the above

kupffer’s cells in the liver are (a) Fat cells (b) Phagocytic cells (c) Blood cells (d) Regenerative cells

Description : kupffer’s cells in the liver are (a) Fat cells (b) Phagocytic cells (c) Blood cells (d) Regenerative cells

Last Answer : (b) Phagocytic cells

Draw a neat sketch of regenerative feed heating.

Description : Draw a neat sketch of regenerative feed heating.

Last Answer : Regenerative Feed Heating  

Which cells in our body have the least regenerative power? (1) Brain cells (2) Mussle cells (3) Bone cells (4) Liver cells

Description : Which cells in our body have the least regenerative power? (1) Brain cells (2) Mussle cells (3) Bone cells (4) Liver cells

Last Answer : Brain cells

Regenerative repeaters are placed along the communication path to control:

Description : Regenerative repeaters are placed along the communication path to control:  a. Power b. Noise c. Frequency d. Amplitude 

Last Answer : Regenerative repeaters are placed along the communication path to control: Noise 

Regenerative feedback implies feedback with?

Description : Regenerative feedback implies feedback with?

Last Answer : Regenerative feedback implies feedback with a positive sign.

What can cause squeaking from my brakes while driving but not while braking?

Description : What can cause squeaking from my brakes while driving but not while braking?

Last Answer : I took off my front tire to look at my pads on that one. Well they look ok expect behind my rotor disk the brake pad looks kinda chipped and chopped up? Like its peeling funny and wearing on it ... this a caliper broken? What could be doing that to the brake pad from the other side of the rotor?

Astrophysics question: Are zero braking distance collisions and infinitive forces possible?

Description : Astrophysics question: Are zero braking distance collisions and infinitive forces possible?

Last Answer : No, it is not. F=m*a, where a is acceleration expressed in m/s/s. zero braking distance also means zero deceleration time. deceleration is negative acceleration. So zero deceleration time turns it into m/s/0. Division by zero.

Stopping distance of vehicles : When brakes are applied to a moving vehicle, the distance it travels before stopping is called stopping distance. It is an important factor for road safety and depends on the initial velocity ( v 0 ) and the braking capacity, or deceleration, ?a that is caused by the braking. A car travelling at speed 72km/hr suddenly applies the brake with the deceleration of 5m/s2. Find the stopping distance of the car -Science

Description : Stopping distance of vehicles : When brakes are applied to a moving vehicle, the distance it travels before stopping is called stopping distance. It is an important factor for road safety and depends on ... the brake with the deceleration of 5m/s2. Find the stopping distance of the car -Science

Last Answer : Here u=72 km/hr = 72×10003600m/s=2072×10003600m/s=20 m/s , v=0 a= -5 m/s2 Now using the relation v2=u2+2asv2=u2+2as 0=(20)2+2×(−5)×s0=(20)2+2×(−5)×s s=40ms=40m

Numerical Questions and answers on Motion for Class 9 physics a. What is the distance travelled by the SUV is first 2 seconds? b. What is the braking force at the end of 5 seconds to bring the SUV to a stop within one seconds? -Science

Description : Numerical Questions and answers on Motion for Class 9 physics a. What is the distance travelled by the SUV is first 2 seconds? b. What is the braking force at the end of 5 seconds to bring the SUV to a stop within one seconds? -Science

Last Answer : a. The distance travelled by the SUV is first 2 seconds = Area of ΔABEΔABE =12 AE BE=12 AE BE =12 2 15=15m=12 2 15=15m b. Acceleration will be given by the slope of the line CD a=0−156−5= ... =−15m/s2 Now mass of the SUV =1000 Kg Braking Force will be F=ma=1000 −15=−15000NF=ma=1000 −15=−15000N

What should you do if the wheels slip during braking and the car starts to roll? (Cross Test)

Description : The braking force must be reduced and reversing must be stopped by counter-steering. The braking force must be increased and the tillage must be stopped by counter-steering. When braking with constant force, counter-steering must be stopped.

Last Answer : The braking force must be reduced and the steering must be stopped by counter-steering.

What can be the braking distance of the train?

Description : If he carries 20 wagons of coal, for example, it can slow down quite a bit, right?

Last Answer : I think that the slip section at a speed of 120 km / h was prescribed 700 m, but I no longer remember exactly

What if your vehicle pulls tp one side when braking why?

Description : What if your vehicle pulls tp one side when braking why?

Last Answer : brakes ineffectoive and not properly adjusted