What are the auxiliaries required for DG?

What are the auxiliaries required for DG? 
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1 Answer

Answer :

1. Starting air system.

Components are compressor, air dryer, air receiver, solenoid valve for start control, pneumatic starting air valve, air distributor and injection valve at each cylinder.

This system operates at high pressure and also provided with soft start of 8-bar pressure in testing of system periodically.


2. Lub oil system.

This is closed loop of having oil sump of capacity of 7 days at full load. This also supplies oil to bearing lubrication, crankshaft, piston, and wiper.

This closed loop Circuit includes pre-lubricating circuit and normal lubricating circuit. Pre- lubricating circuit is controlled by PLC, but at first commissioning and overhauling pre-lub start immediately.


3. Water cooling system. 

This is provided with closed loop fresh water for remove heat from lubricating oil system, charge air cooler, engine components (cylinder lines, cylinder head etc). Fresh water chemistry is controlled to avoid organic growth and corrosion. This water is heated for normal operation to avoid thermal shock. This water is cooled by active process water. One tank is provided to transfer fresh water to the system. Before transferring fresh water chemical addition should be done.


4. Fuel oil system.

The engine driven fuel oil pump is flooded with fuel oil from the day tank by gravity. Low-pressure fuel from fuel pump is supplied to individual injection pump is injected to individual cylinders through injectors.


5. Combustion air and exhaust gas system.

The engine is supplied by compressed combustion air with the help of exhaust gas driver Turbo – charger. Each bank cylinder is provided with a Turbo – charger.

Turbo – charger is provided with filters. The exhaust is passes through silencer.


6. Speed governing system.

Governer is hydraulic mechanical type. The governer is linked to the fuel racks.

The maximum work output of the UG – 8 governer is 8 lb – ft over the full 42° travel. For full load 30°is sufficient and remaining for overloading.

Governer comprises

a. Speed droop setting.

b. Oil sight glass.

c. Load limiter

d. Compensation pointer and adjuster.

e. Local speed adjuster.


7. Two numbers of ventillation fans are provided in each DG building. One starts at respective DG breaker close and other at >45°C. DG room is provided with 7 numbers of smoke detectors (ionized type) and 7 numbers of flame detectors (photoelectric type).


8. Separate DG’s are having separate MCC for their auxiliaries power supply. For

DG – 1 auxiliaries MCC P1. For DG – 2 auxiliaries MCC Q1 and for DG – 3

MCC DG – 3 is provided.


9. Phase winding is provided with two RTD’s for hotspot measurement and bearing provided with one RTD each.


10. LCP is provided one each for each DG. 


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Related questions

Where automatic restart does not present a hazard after a power failure, Coast Guard Regulations (46 CFR) require motor controllers for auxiliaries vital to the propelling equipment to be provided with ________________. A. overload protection B. low voltage protection C. low voltage release D. reverse current protection

Description : Where automatic restart does not present a hazard after a power failure, Coast Guard Regulations (46 CFR) require motor controllers for auxiliaries vital to the propelling equipment to be provided ... overload protection B. low voltage protection C. low voltage release D. reverse current protection

Last Answer : Answer: C

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Last Answer : Answer: B

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State the function of following auxiliaries used in electric locomotive, i) Batteries ii ) Compressor iii ) Blower iv ) Exhauster

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Last Answer : Ans: 1) Batteries - supply to run baby compressor which supplies air for initial raising of pantograph and closing of air blast circuit breaker. 2) Compressor - supply air for operation, control and ... blower, reactor blower, SCR blower, traction motor blower etc. 4) Exhausters - for vacuum brakes.

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Last Answer : The two types of earthing are Familiar as Equipment earthing and system earthing. In Equipment earthing: body (non conducting part) of the equipment should be earthed to safeguard the human ... earthing will be further classified into directly earthed, Impedance earthing, resistive (NGRs) earthing.

What are the protections provided for DG?

Description : What are the protections provided for DG?

Last Answer : 1. Differential protection (87). 2. Over speed of engine. 3. Reverse power protection (in LOCA condition time delay). 4. Low lubricating oil pressure. 5. Cooling water temperature high. 6. 6 ... 8. Emergency stops push button. In LOCA condition 4 - 8 protections are not permitted to operate. 

What are stages of DG starting?

Description : What are stages of DG starting? 

Last Answer : 1. At start signal compressed air through solenoid valve passes over piston and rotates the shaft. 2. At speed >60-rpm ignition starts. 3. Closing of excitation starts at >800-rpm. 4. At speed of > 900-rpm rated speed and rated voltage signal starts. 5. Closing of over speed is at >1150-rpm. 

Why neutral breaker used in DG neutral grounding?

Description : Why neutral breaker used in DG neutral grounding?

Last Answer : In case of high earth fault currents it is therefore normal practice to install a circuit breaker in the neutral of the generator in order to reduce the total fault clearance time. 

Why in DG E/F protection, we do not open class IV CB’s or supply CB’s?

Description : Why in DG E/F protection, we do not open class IV CB’s or supply CB’s?

Last Answer : Delta of aux. Transformer prevents E/F currents from grid into DG neutral.  

Why motoring should be prevented in TG and DG?

Description : Why motoring should be prevented in TG and DG? 

Last Answer : In TG motoring prevented due to the turbine limitation otherwise last stage blade will fails. In DG motoring prevented, because of unburned fuel catches fire in DG. 

What is the % overload allowed for TG and DG?

Description : What is the % overload allowed for TG and DG?

Last Answer : For TG nil For DG 110% for 2 hours. 

What is the full form of DG ?

Description : What is the full form of DG ?

Last Answer : DG 's full form Director General.

What is the full form of DG ?

Last Answer : Director General.

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Description : The fortnightly consolidated list of certificates issued to POs should, be sent by _____to the ____ a) Circle Stamp Depots, Circle postal accounts office b) Head offices , Postal account office c) Circle office , DG Post d) Circle office, Circle account office

Last Answer : a) Circle Stamp Depots, Circle postal accounts office

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Description : _________ is authorized to transfer a branch office from one account office to another account office under the same HO a) Head of the Circle b) DG Post c) Postmaster General d) Superintendent

Last Answer : d) Superintendent

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Last Answer : c) Both the A & B

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Description : The misconnection between air services should invariably be reported by Record Officer to a) DG of Posts b) The head of the division c) The Head of the circle by first post d) None of these

Last Answer : c) With the specific orders of the Head of the cirlcle

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Last Answer : d) The Supd. Post office to Head of the circle/Regional PMG

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Last Answer : c) Supdt Of PO, Head of the Circle/ Regional PMG, Account officer, 2 month

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Last Answer : d) None of these

Who will prepare the register of sanctioned establishment a distribution list in form Est-43 in RMS a) Supdt. of Post office b) Head of the Circle c) Supdt of RMS d) DG Post

Description : Who will prepare the register of sanctioned establishment a distribution list in form Est-43 in RMS a) Supdt. of Post office b) Head of the Circle c) Supdt of RMS d) DG Post

Last Answer : c) Supdt of RMS

_____ will submit the application of cases arising from railway accidents accompanied by the documents mentioned above, for the order of _____through ____ a) The Head of the office, Head of the circle, PMG b) The Supdt of PO, PMG, Account office c) The Head of the circle, DG, Audit office d) None of these

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Last Answer : c) The Head of the circle, DG, Audit office

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Description : Transfer to sorters holing selection grade appointment will be reported to a) SSP/SP b) PMG c) Head of the Circle d) DG Post

Last Answer : c) Head of the Circle

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Description : Reports of transfer of charge of gezetted officer including Head of the circle and P&T Accountant should be sent by post (not telegraph) to the a) Next higher authority b) Audit officer concerned c) DG Post d) All the above

Last Answer : d) All the above

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Description : In the event of any disagreement between the relieved and the relieving officers, a reference should be made to the a) SSP/SP b) PMG c) Head of the Circle d) DG Post

Last Answer : c) Head of the Circle

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Description : Transfer of officials, who are not permanent in grade, may in deserving cases, be permitted with the personal approval of the a) Head of the circle b) DG Post c) Min of IT d) None of these

Last Answer : a) Head of the circle

The gradation list prepared in once in a _______ year on _________ by ______ in the form______________ a) Two, 1st Jan, DG Post, APP 43 b) Three, 1st Jul, HOC, APP 43 c) Five, 1st Jul , HOC, APP 44 d) None of these

Description : The gradation list prepared in once in a _______ year on _________ by ______ in the form______________ a) Two, 1st Jan, DG Post, APP 43 b) Three, 1st Jul, HOC, APP 43 c) Five, 1st Jul , HOC, APP 44 d) None of these

Last Answer : c) Five, 1st Jul , HOC, APP 44

Notification made by the government of India are published in _____ and those by the _________ and _______and administrative offices in _________ of Gazette India a) Part I section 2, DG, Head of the circle, Part III section I b) DG order, Head of the circle, DG, Part II c) Notification, DG, Head of the circle, Part II, d) None of these

Description : Notification made by the government of India are published in _____ and those by the _________ and _______and administrative offices in _________ of Gazette India a) Part I section 2, DG, Head of the circle, Part ... DG, Part II c) Notification, DG, Head of the circle, Part II, d) None of these

Last Answer : a) Part I section 2, DG, Head of the circle, Part III section I

Every important event in the official career of a gezetted Govt servant affecting his pay and other conditions of service e.g appointment, promotion, leave, retirement, removal, dismissal etc. should be notified in the a) Memorandum b) DG Order c) Gezette of India d) None of these

Description : Every important event in the official career of a gezetted Govt servant affecting his pay and other conditions of service e.g appointment, promotion, leave, retirement, removal, dismissal etc. should be notified in the a) Memorandum b) DG Order c) Gezette of India d) None of these

Last Answer : c) Gezette of India

Re-employment of persons who resigned, absconded or were dismissed should be made on special ground previous approval of the a) Head of the circle b) Min of IT c) DG Post d) PMG

Description : Re-employment of persons who resigned, absconded or were dismissed should be made on special ground previous approval of the a) Head of the circle b) Min of IT c) DG Post d) PMG

Last Answer : c) DG Post

The equipment of stationery for all office must be sanctioned by ______ a) DG Post b) Head of the circle c) Head of the division d) None of these

Description : The equipment of stationery for all office must be sanctioned by ______ a) DG Post b) Head of the circle c) Head of the division d) None of these

Last Answer : b) Head of the circle

A detailed record of all losses of stock and stores should be maintained and an annual statement submitted to the a) DG Post b) Head of the circle c) Divisional office d) Audit office

Description : A detailed record of all losses of stock and stores should be maintained and an annual statement submitted to the a) DG Post b) Head of the circle c) Divisional office d) Audit office

Last Answer : d) Audit office

The security furnished by an official will be liable to forfeiture by a) Director General b) Head of the circle c) Any officer authorized by DG Post d) Both the A & C

Description : The security furnished by an official will be liable to forfeiture by a) Director General b) Head of the circle c) Any officer authorized by DG Post d) Both the A & C

Last Answer : d) Both the A & C

Working of night post office generally fixed by a) Head of the circle b) DG Post c) PMG d) SP/SSP

Description : Working of night post office generally fixed by a) Head of the circle b) DG Post c) PMG d) SP/SSP

Last Answer : a) Head of the circle

The rates of inland postage: (A) May be fixed by Director General (Posts) by issue of DG circular (B) May be fixed by the Ministry of Communication and IT by issue of orders (C) May be fixed by the Central Government by notification in official Gazette (D) None of above is correct

Description : The rates of inland postage: (A) May be fixed by Director General (Posts) by issue of DG circular (B) May be fixed by the Ministry of Communication and IT by issue of orders (C) May be fixed by the Central Government by notification in official Gazette (D) None of above is correct

Last Answer : (C) May be fixed by the Central Government by notification in official Gazette

The dept of post under administrative control of a)President of India b) Min of communication c) CPMG d) DG Post

Description : The dept of post under administrative control of a)President of India b) Min of communication c) CPMG d) DG Post

Last Answer : d) DG Post

License for Registered newspaper is issued by a) DG Posts b) Head of the circle c) SSP/SP d) PMG

Description : License for Registered newspaper is issued by a) DG Posts b) Head of the circle c) SSP/SP d) PMG

Last Answer : c) SSP/SP

Authority to whom complaint should be addressed a) Local Supdt.and PM in case first class PO. b) HOC c) DG Posts d) PMG

Description : Authority to whom complaint should be addressed a) Local Supdt.and PM in case first class PO. b) HOC c) DG Posts d) PMG

Last Answer : a) Local Supdt.and PM in case first class PO

Prepayment of postage on cash facility is authorized by and how much letter may be posted to have these facility. a) HOC, UR-500 big city and 250 small city, Reg -50 b) DG post, UR-1000 big city and 500 small city, Reg -100 c) Head of the division UR-5000 big city and 1000 small city, Reg -500 d) None of these

Description : Prepayment of postage on cash facility is authorized by and how much letter may be posted to have these facility. a) HOC, UR-500 big city and 250 small city, Reg -50 b) DG post, UR-1000 big city and 500 ... -100 c) Head of the division UR-5000 big city and 1000 small city, Reg -500 d) None of these

Last Answer : a) HOC, UR-500 big city and 250 small city, Reg -50

Night Post Office may extend up to and by a) 0830 pm ,DG posts b) 0700pm,HOC c) 1000pm, PMG d) 0600pm,SSP

Description : Night Post Office may extend up to and by a) 0830 pm ,DG posts b) 0700pm,HOC c) 1000pm, PMG d) 0600pm,SSP

Last Answer : a) 0830 pm ,DG posts

The central government may published the rule by a) Internet b) DG Orders c) Notification in the official gazette d) Circular

Description : The central government may published the rule by a) Internet b) DG Orders c) Notification in the official gazette d) Circular

Last Answer : c) Notification in the official gazette

The Central Government may fix the inland rate published in a) DG orders b) By letter c) Gazette notification d) None of the above

Description : The Central Government may fix the inland rate published in a) DG orders b) By letter c) Gazette notification d) None of the above

Last Answer : c) Gazette notification

Who is the designated authority to enter into agreement on behalf of the Department for providing BNPL facility for Speed Post service at Head Post Office ? a) Head of the Circle b) Divisional head c) DG Post d) None of these

Description : Who is the designated authority to enter into agreement on behalf of the Department for providing BNPL facility for Speed Post service at Head Post Office ? a) Head of the Circle b) Divisional head c) DG Post d) None of these

Last Answer : b) Divisional head

Mark the correct option related to submission of robbery report to DG Posts a) Case of highway robbery of mail involving loss of cash/valuables above Rs 50000 b) The attacks on offices by dacoits causing injury to the staff/losses over Rs50000 c) Cases of loss of damage to or tampering with ins article which the amount of compensation payable exceed Rs 10000 d) Cases of fraud and loss or misappropriation of public money exceeds Rs 50000 e) All the above

Description : Mark the correct option related to submission of robbery report to DG Posts a) Case of highway robbery of mail involving loss of cash/valuables above Rs 50000 b) The attacks on offices by dacoits ... ) Cases of fraud and loss or misappropriation of public money exceeds Rs 50000 e) All the above

Last Answer : e) All the above

Monthly sorting order is issued by a) PMG b) SSP/SP c) DG Posts d) CPMG

Description : Monthly sorting order is issued by a) PMG b) SSP/SP c) DG Posts d) CPMG

Last Answer : d) CPMG

The decision of competent authority that DO(PLI) procuring effective business to the tune of ____ or more shall no be eligible for automatic extension of tenure for the next ___ year. Such extension will be granted by ______subject to good work,conduct & satisfactory record in the year. a) 10 crores, 1 year, Head of the circle, b) 20 crores, 2 year, DG Post c) 25 crores, 1 year, Head of the circle d) 25 cores. 1 years, SSP/SP

Description : The decision of competent authority that DO(PLI) procuring effective business to the tune of ____ or more shall no be eligible for automatic extension of tenure for the next ___ year. Such extension will be granted by ... Post c) 25 crores, 1 year, Head of the circle d) 25 cores. 1 years, SSP/SP

Last Answer : c) 25 crores, 1 year, Head of the circle

How can we revive the lapsed PLI policy? a) Lapsed PLI cannot be revived b) Lapsed PLI can be revived after the sanction of the DG Post c) Lapsed PLI can be revived with the order of the CPMG and on paying all the installment due along with 12% interest and also producing medical fitness certificate d) Lapsed PLI can be revived getting another policy

Description : How can we revive the lapsed PLI policy? a) Lapsed PLI cannot be revived b) Lapsed PLI can be revived after the sanction of the DG Post c) Lapsed PLI can be revived with the ... with 12% interest and also producing medical fitness certificate d) Lapsed PLI can be revived getting another policy

Last Answer : c) Lapsed PLI can be revived with the order of the CPMG and on paying all the installment due along with 12% interest and also producing medical fitness certificate

In case the policy three year old and if premium is not paid for 12 month and more then the permission form the ______ is necessary a) DDG PLI b) DG Post c) Head of the Circle d) SSP/SP

Description : In case the policy three year old and if premium is not paid for 12 month and more then the permission form the ______ is necessary a) DDG PLI b) DG Post c) Head of the Circle d) SSP/SP

Last Answer : c) Head of the Circle

The purpose of a governor in a DG set is

Description : The purpose of a governer in a DG set is • To regulate the speed. • To regulate the voltage • To regulate the power • To regulate the current.

Last Answer : The purpose of a governor in a DG set is To regulate the speed.