What are the difference MCB and CB?

What are the difference MCB and CB?
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The main difference between MCB, RCCB, and Isolators Isolators are generally used in power system while on the other hand, MCB is the circuit breaker. Isolators are manually-operated device, and on the contrary, the circuit breaker is the automatically-operated device.
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What is the difference between MCB & MCCB, Where it can be used?

Description : What is the difference between MCB & MCCB, Where it can be used?

Last Answer : A: MCB is miniature circuit breaker which is thermal operated for overload condition and magnetically operated for short circuit protection. It is available in small current rating. MCCB is moulded case ... frequency may be inbuilt. Normally it is used where normal current is more than 100 A.

What is the difference between MCB & MCCB, Where it can be used?

Description : What is the difference between MCB & MCCB, Where it can be used?

Last Answer : MCB is miniature circuit breaker which is thermal operated and use for short circuit protection in small current rating circuit. ▪ Normally it is used where normal current is less than 100A. ▪ MCCB ... under frequency may be inbuilt. ▪ Normally it is used where normal current is more than 100A.

What is the function of MCB ?

Description : What is the function of MCB ?

Last Answer : MCB's job is to automatically disconnect the circuit from the source by turning it on and off.

What is the full form of MCB ?

Last Answer : MCB Full: Mauritius Commercial Bank.

What are the points to be considered for MCB (miniature circuit breaker selection)?

Description : What are the points to be considered for MCB (miniature circuit breaker selection)?

Last Answer :  I(L)x1.25=I(MAX) maximum current. Mcb specification is done on maximum current flow in circuit.

Working of MCB practical

Description : Working of MCB practical

Last Answer : Practical Significance The switches and MCBs are the most important components of an electrical installation. They provide the safety & ease in smooth operation of the installation. It is essential to know the working ... . iii. Close the knife switch. iv. Observe the working of MCB.

Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB

Description : Explain the use of the following components in electrical wiring system and give specification of each: (i) MCB (ii) ELCB

Last Answer : i) MCB (Miniature Circuit Breaker)  * MCB provides short circuit protection. * MCB provides overload protection * ELCB provides earth fault protection. * MCB is in series with load and ELCB is ... The low sensitivity ELCB are used for electrical machine the rating is in between the 3A to 10 A

State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.

Description : State any two advantages of MCB over Fuse. State the standard specifications of MCB available in the market.  

Last Answer : Following advantages of MCB over Fuse: 1. No need of replacement of fuse wire. 2. Manually restore of supply is simple. 3. Fault understanding by visual inspection 4. More safe than fuse The standard specifications of ... 6A, 10A,16A,20A, 25A, 30A, 32A, 40A, 50A, 60A and 63A 6. 250V and 450 v

Explain MCB and ELCB with connection diagram supplying single phase load.

Description : Explain MCB and ELCB with connection diagram supplying single phase load. 

Last Answer : OR OR Explanation: * MCB provides short circuit protection. * MCB provides overload protection * ELCB provides earth fault protection. * MCB is in series with ... occurs, the ELCB cuts off the power within the time of 0.1 sec. automatically to protect the personnel. 

State the types of protections provided by MCB.

Description : State the types of protections provided by MCB. 

Last Answer : The types of protections provided by MCB: 1. MCB provides short circuit protection. 2. MCB provides overload protection

Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.

Description : Write applications of each of the following:(i) Fuse (ii) MCB (iii) MCCB.

Last Answer : i) Applications of fuse:  * Used in domestic installations to provide short circuit protection.  * Used in commercial / Industrial installations to provide overload and short circuit protection.  * Used in ...  * Rectifiers panels,  * U.P.S, Electronic equipment,  * Motors,  * Furnaces

State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch.

Description : State the function of : i) MCCB ii) ELCB iii) MCB iv) Switch. 

Last Answer : i) MCB: Provide short circuit protection & over load protection to electrical loads.  ii) ELCB: Provides protection by detecting the unsafe magnitudes leakage currents flowing to earth and disconnecting ... rating.  iv) Switch: Make and break the electrical connection to the load manually.

Explain the meaning of following terms: i) MCB ii) Socket outlet iii) Neutral iv) Fuse-link

Description : Explain the meaning of following terms: i) MCB ii) Socket outlet iii) Neutral iv) Fuse-link

Last Answer : i) MCB:  Miniature circuit breaker operates automatically at the time of fault or over load. And it is used for the protection of electrical installation. They are available from 0.5 A to 100 Amps. ... melts automatically at the time of fault or over load. Fuse must be replaced after the fault.

What is MCB?

Description : What is MCB?

Last Answer : MCB is a miniature circuit breaker. MCB is used for overcurrent protection. MCB have low rating as compared to MCCB. MCB have thermal trip unit and magnetic trip unit. MCB can also be ... faster as compared to thermal trip unit it disconnect very quickly and used for short circuit protection.

Current ratings of MCB for Air conditioners is generally used as _________.

Description : Current ratings of MCB for Air conditioners is generally used as _________. A. 10/15 Amp B. 5/10 A C. 20/25 Amp D. none of these 

Last Answer : Current ratings of MCB for Air conditioners is generally used as 10/15 Amp. 

What difference between ELCB and CB ?

Description : What difference between ELCB and CB ?

Last Answer : Any difference in both indicates the residual current which leaking to earth. ... An MCB(Miniature Circuit Breaker) is used to detect electrical devices and protect them from short circuit where as ELCB (Earth Leakage Circuit Breaker) is used to detect leakages with the intention to avoid shock

Ever wish you had a CB , or a VHF radio so you could talk to truckers?

Description : Ever wish you had a CB , or a VHF radio so you could talk to truckers?

Last Answer : answer:I think about how great it would be to have access to their conversations every time I do the 11-hour drive from where from Memphis to central Virginia. It would be nice to know about weather ... than listening to the radio broadcasts picked up in that stretch. Edit: What do y'all talk about?

If the FCC had given the license to CB Operators, instead of cellphones, how would this have effected communications as we now know it?

Description : If the FCC had given the license to CB Operators, instead of cellphones, how would this have effected communications as we now know it?

Last Answer : How would that have worked? CB is transceiver to transceiver, and cell/mobile is transceiver to tower and backhaul with a backbone wired network.

How do I get the best performance our of my Radio shack TRC 446 CB Radio?

Description : How do I get the best performance our of my Radio shack TRC 446 CB Radio?

Last Answer : Power Mic. Get the antenna as high as possible. Get a good antenna, makes all the difference.

Should I rebuild my Honda CB 360 transmission or just ditch the bike?

Description : Should I rebuild my Honda CB 360 transmission or just ditch the bike?

Last Answer : ditch the bike

Is there anyway to communicate over a CB with computers?

Description : Is there anyway to communicate over a CB with computers?

Last Answer : answer:No. CB is through radio frequency. iChat is not. Here is a program that uses CB on computer, but is not compatible with iChat. http://www.livecbradio.com/talk.htm

Why do drivers who talk on cell phones have more accidents that those talking on CB radios?

Description : Why do drivers who talk on cell phones have more accidents that those talking on CB radios?

Last Answer : My suspicion would be that there are so many more cell phones in use, that that affects the numbers.

Cobra CB Speaker?

Description : Cobra CB Speaker?

Last Answer : Looks like the microphone also houses the speaker unit to me. Hope this helps.

The side AB of a parallelogram ABCD is produced to any point P. A line through A and parallel to CP meets CB produced at Q, then parallelogram PBQR is completed (see figure). -Maths 9th

Description : The side AB of a parallelogram ABCD is produced to any point P. A line through A and parallel to CP meets CB produced at Q, then parallelogram PBQR is completed (see figure). -Maths 9th

Last Answer : Join AC and QP, also it is given that AQ || CP ∴ △ACQ and △APQ are on the same base AQ and lie between the same parallels AQ || CP. ∴ ar(△ACQ) = ar(△APQ) or ar(△ABC) + ar(△ABQ) = ar(△BPQ) + ar(△ABQ) or ar(△ABC) = ar( △BPQ) or 1/2 ar(||gm ABCD) = 1/2 ar(||gm PBQR) or ar(||gm ABCD) = ar(||gm PBQR)

The side AB of a parallelogram ABCD is produced to any point P. A line through A and parallel to CP meets CB produced at Q, then parallelogram PBQR is completed (see figure). -Maths 9th

Description : The side AB of a parallelogram ABCD is produced to any point P. A line through A and parallel to CP meets CB produced at Q, then parallelogram PBQR is completed (see figure). -Maths 9th

Last Answer : Join AC and QP, also it is given that AQ || CP ∴ △ACQ and △APQ are on the same base AQ and lie between the same parallels AQ || CP. ∴ ar(△ACQ) = ar(△APQ) or ar(△ABC) + ar(△ABQ) = ar(△BPQ) + ar(△ABQ) or ar(△ABC) = ar( △BPQ) or 1/2 ar(||gm ABCD) = 1/2 ar(||gm PBQR) or ar(||gm ABCD) = ar(||gm PBQR)

What is the full form of 'CB' ? -How To ?

Description : What is the full form of 'CB' ? -How To ?

Last Answer : The full form of 'CB' is Closing Balance

Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation"),((b),E_(2),(b),"Stereo specific"),((c),S_(N^(1))

Description : Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation"),((b),E_(2),(b),"Stereo specific"),((c),S_(N^(1))

Last Answer : Which is/are correctly linked here? `{:(,"List I",,"List II"),((a),E_(1)Cb,(a),"Carbanion formation" ... "),((d),E_(1),(d),"Carbocation formation"):}`

Express vectors AC in terms of vectors AB and CB shown in the following figure.

Description : Express vectors AC in terms of vectors AB and CB shown in the following figure.

Last Answer : Express vector \(\overset\longrightarrow{AC}\) in terms of vectors \(\overset\longrightarrow{AB} ... {CB}\) shown in the following figure.

`AB` is a wire of uniform resistance. The galvanometer `G` shows no deflection when the length `AC = 20 cm` and `CB = 80 cm`. The resistance `R` is eq

Description : `AB` is a wire of uniform resistance. The galvanometer `G` shows no deflection when the length `AC = 20 cm` and `CB = 80 cm`. The resistance `R` is eq

Last Answer : `AB` is a wire of uniform resistance. The galvanometer `G` shows no deflection when the length `AC = 20 cm ... ` B. `8Omega` C. `20Omega` D. `40Omega`

How far is the range for cb two way radio?

Description : How far is the range for cb two way radio?

Last Answer : The range for a CB radio is maybe a mile or three. Ask a trucker next time you're driving alongside one on the highway. Just make sure to stay out of his blind spot.

How far can a cb two way radio reach a signal from?

Description : How far can a cb two way radio reach a signal from?

Last Answer : Most CB two way radios can reach a signal from 20 to 25 miles. The actual amount varies dependent on what brand of CB two way radio you own or are purchasing.

What company is the leader in making the CB radio?

Description : What company is the leader in making the CB radio?

Last Answer : Cobra Electronics is currently the leader in manufacturers who make CB radios. You can visit their website at www.cobra.com/ .

Where could I buy genuine replacement parts for a Honda CB 750?

Description : Where could I buy genuine replacement parts for a Honda CB 750?

Last Answer : You can buy parts for your motorcycle online. Oldbikebarn.com has replacement parts for a Honda CB 750, as does ebay.com. Also check out the classifieds in your local newspaper and any motorcycle shops in your area.

Where can I find the best deal on a CB Radio.?

Description : Where can I find the best deal on a CB Radio.?

Last Answer : It depends on the kind of CB radio. Are you looking for a automotive radio, or a handheld? A quick search over at www.big5sportinggoods.com shows that they only have handheld CB radios. Although what they do have seems to be decently priced.

What factors into range for a CB radio?

Description : What factors into range for a CB radio?

Last Answer : The two main factors in range are equipment and terrain. For better range, better equipment is needed. Terrain plays a large role as well. For a home CB radio station, range should be a lot farther than what one would normally get in a vehicle, as long as quality equipment is used.

What antenna do I need for my CB radio?

Description : What antenna do I need for my CB radio?

Last Answer : The main thing to remember for CB radio antennas is that taller antennas will work better. If this is for a vehicle, select a tall antenna where at least 50 percent of it will be above the roof line. You will have the best range this way.

Do I need a license to use a CB radio?

Description : Do I need a license to use a CB radio?

Last Answer : In years past, a license was needed to use a CB radio. In the 1980s, the FCC removed the license stipulation, but CB radio users must still follow all FCC rules regarding CB radio usage.

Give the details of switchyard 220 kV CB, Isolator, CT, CVT and lightning arrestor.

Description : Give the details of switchyard 220 kV CB, Isolator, CT, CVT and lightning arrestor.  

Last Answer : 220 kV SF6 Circuit Breaker 1. Make - ABB 2. Air pressure blocking a. Close Block - 17.3 bar. b. Open block - 16.7 bar. c. Auto reclose block - 19 bar. 3. SF6 pressure block a. Alarm - 5. ... , storage and erection. Rated voltage : 216 kV rms. Operating voltage : 184 kV rms. 

What are the characteristics of CB, OLR and HRC Fuse?

Description : What are the characteristics of CB, OLR and HRC Fuse?

Last Answer : When CB is used the CB characteristics should be below the fuse, because the CB should operate first and then fuse. Not vice-versa. Because CB is the main protection or main breaking device.  

Why in transformer the LV CB also be tripped along with HV CB for a primary side fault?

Description : Why in transformer the LV CB also be tripped along with HV CB for a primary side fault?

Last Answer : Auxiliary transformer 415v delta star transformer, if HV CB alone tripped then back feeding from LV side (say DG runs parallel with transformer)—arcing voltage at the fault on primary—fault fed for more time – more damage.  

For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. If the volume of the reactor is suddenly reduced to 1/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times. (A) 8 (B) 16 (C) 1/8 (D) 1/16

Description : For a gaseous phase reaction, rate of reaction is equal to K. CA . CB. If the volume of the reactor is suddenly reduced to 1/4th of its initial volume, then the rate of reaction compared to the original rate will be __________ times. (A) 8 (B) 16 (C) 1/8 (D) 1/16

Last Answer : (B) 16

The order of the chemical reaction as shown in the bellow figure, whose rate equation is given as -rA = KCA 2 . CB is (A) 0 (B) 1 (C) 2 (D) 3

Description : The order of the chemical reaction as shown in the bellow figure, whose rate equation is given as -rA = KCA 2 . CB is (A) 0 (B) 1 (C) 2 (D) 3

Last Answer : (D) 3

Pick out the wrong statement. (A) In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration of A (B) Transition state theory approaches the problem of calculating reaction rates by concentrating on the idea of activated complexes (C) According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases (D) If the rate of an irreversible reaction, A + B → 2C is k.CA .CB , then the reaction is always elementary

Description : Pick out the wrong statement. (A) In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration ... irreversible reaction, A + B → 2C is k.CA .CB , then the reaction is always elementary

Last Answer : (C) According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases

The rate of a gas phase reaction is given by K . CA . CB. If the volume of the reaction vessel is reduced to l/4th of its initial volume, then the reaction rate compared to the original rate will be __________ times. (A) 4 (B) 16 (C) 8 (D) 2

Description : The rate of a gas phase reaction is given by K . CA . CB. If the volume of the reaction vessel is reduced to l/4th of its initial volume, then the reaction rate compared to the original rate will be __________ times. (A) 4 (B) 16 (C) 8 (D) 2

Last Answer : (B) 16

To maximise the formation of R in the simultaneous reaction A + B → R, rR = 2CA 0.5 .CB 2 A + B→ S, rS = 1.5 CA. CB We should have (A) Low CA , low CB (B) Low CA , high CB (C) High CA , low CB (D) High CA , high CB

Description : To maximise the formation of R in the simultaneous reaction A + B → R, rR = 2CA 0.5 .CB 2 A + B→ S, rS = 1.5 CA. CB We should have (A) Low CA , low CB (B) Low CA , high CB (C) High CA , low CB (D) High CA , high CB

Last Answer : (B) Low CA , high CB

The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is (A) 80° 30' (B) 99° 30' (C) 70° 30' (D) None of these

Description : The bearing of AB is 190° and that of CB is 260° 30'. The included angle ABC, is (A) 80° 30' (B) 99° 30' (C) 70° 30' (D) None of these

Last Answer : (C) 70° 30'

For interrupting capacitive currents which Circuit Breaker (CB) is used a) SF6 CB b) Oil CB c) Vacuum CB d) Air blast CB

Description : For interrupting capacitive currents which Circuit Breaker (CB) is used a) SF6 CB b) Oil CB c) Vacuum CB d) Air blast CB

Last Answer : Ans: Vacuum CB

What is CB, CE and CC configuration ?

Description : What is CB, CE and CC configuration ?

Last Answer : Buffer : A device or a circuit used to isolate two pt'ne circuits or stages. The emitter follows is a example of buffer. Alpha = IC / IE Beta = IC / IB

In what cloud is icing and turbulence most severe? a. Cb b. Ns c. Sc d. Ci

Description : In what cloud is icing and turbulence most severe? a. Cb b. Ns c. Sc d. Ci

Last Answer : a. Cb

The Darlington pair consists of the following two stages A) CE and CC B) Both C) Both CC D) CE and CB

Description : The Darlington pair consists of the following two stages A) CE and CC B) Both C) Both CC D) CE and CB

Last Answer : C) Both CC