Model question paper for Dubai municipality exam for electrical contracting activity

As per the requests of many Engineers, I have prepared a model question paper for the Dubai Municipality exam for Electrical contracting activity.
Please note, this is only a model of questions asked in the exam. If you want to win this exam, you have to study the DEWA regulation document thoroughly.

Model Question Paper:-

Q.1) What is the minimum clear height required for transformer room in basement ?

a)   2.75 
b)   3.0 m
c)   3.7 m
d)   4 m

Q.2) One HP =

a)   0.457 kW

b)   0.600 kW

c)   0.746 kW

d)   1.60 kW

Q.3) What is current rating of an incomer MCCB/Isolator & size of incomer cables required in a distribution board for an electric load of  12kW

a)   40A /16 Sq. mm

b)   63A /25 Sq.mm

c)   80A /35 Sq.mm

d)   100A /35 Sq.mm

Q.4) What should be the height to 13A switched socket provided in kitchen area 

a)   25cm(From the work top)

b)   45cm(From the work top)

c)    60cm(From the work top)

d)   10cm(From the work top)

Q.5) What is the advantage of star connection over delta connection is

a)   Step down voltage 

b)   Step down current

c)   Extra step up current

d)   Extra step up power

Q.6) What is the minimum depth to which an earth electrode must be driven to

a)   3m

b)   4m

c)   5m

d)   6m

Q.7) What is the maximum voltage drop allowed from the point of supply to any point/equipment/appliances connected

a)   1.5% of the nominal voltage of the electric supply

b)   2.5%of the nominal voltage of the electric supply

c)   4.0% of the nominal voltage of the electric supply

d)   5.0%of the nominal voltage of the electric supply

Q.8) What is the maximum earth resistance value allowed for main earth electrode, for each incoming DEWA supply/MDB

a)   10 Ohms

b)   5 Ohms

c)   1 ohm

d)   0.1 Ohm

Q.9) How much voltage is set for 1 minute for High voltage test or Dielectric test on LV panel/MDB conducted in factory as per DEWA regulation

a)   2.5 kV

b)   5 kV

c)   7.5 kV

d)   10 kV

Q.10) The efficiency of a transformer is depended on

a)   Core Loss

b)   Copper Loss

c)   Stray Loss

d)   Dielectric Loss

Q.11) The nominal electric supply voltage from DEWA is

a)   220/380V,50 HZ, 3 phase

b)   230/400V, 50HZ, 3 phase

c)   240/415V,50 HZ, 3 phase

d)   250/440V,50 HZ, 3 phase

Q.12) Metering by means of CT shall be installed where the CB rating at the point of supply is

a)   200 Amp

b)   300 Amp

c)   400 Amp

d)   600 Amp

Q.13) Transformers are rated in

a)   kW

b)   kWh

c)   kV

d)   kVA

Q.14) One lux means

a)   One Lumen/1000 sq. m

b)   One Lumen/100 sq. m

c)   One Lumen/10 sq. m

d)   One Lumen/1 sq.m

Q.15) The glare of lighting can be reduced by:

a)   Using reflectors

b)   Using diffusers in front of reflectors

c)   Increasing the height of lamp

d)   All of above

Q.16) The acceptable power factor of an installation:

a)   Above 0.9 lagging

b)   Below 0.9 lagging

c)   Between 0.8 & 0.9 lagging

d)   Between 0.9 leading and unity

Q.17) Three phase dead short circuit is:

a)   A symmetrical fault

b)   An unsymmetrical fault

c)   All of the above

d)   None of the above

Q.18) What is the maximum chiller load (kW) can be connected to 1500 kVA transformer as per DEWA regulations:

a)   950kW

b)   1200 kW

c)   1500 kW

d)   2000 kW

Q.19) The sum of combined single core cross sectional area of all cables installed on a cable tray shall not exceed how much percentage of interior cross sectional area of that cable tray:

a)   35%

b)   40%

c)   50%

d)   60%

Q.20) In a series circuit the current is:

a)   Constant

b)   Different in different resisters

c)   Proportional to the resistance

d)   Zero always

Q.21) The area of coverage of smoke detector is:

a)    600 sqft

b)   450 sqft

c)   750 sqft

d)   900 sqft

Q.22) What is the recommended lux level in office area work table:

a)   300 lux

b)   500 lux

c)   700 lux

d)   900 lux

Q.23) How many floors in a high rise building shall be supplied by a busbar riser to ensure reliability of power supply interruption during an outage of the respective busbar:

a)   12 floors

b)   8 floors

c)   10 floors

d)   6 floors

Q.24) What is the maximum allowed number of 13A single switched sockets outlets installed in room other than kitchen and controlled by 30/32A circuit breaker in distribution board and connected in a ring circuit:

a)   3 sockets

b)   8 sockets

c)   10 sockets

d)   15 sockets

Q.25) What kind of socket shall be provided for window type air conditioner with cooling capacity upto 18000 BTU/hr:

a)   13 Amp socket

b)   15 Amp socket

c)   20 Amp socket

d)   30 Amp socket

Q.26) What is the recommended rated operating current (mA) value of RCCB for elevators/escalator:

a)   100/300 mA

b)   300/500 mA

c)   100/400 mA

d)   300/1000 mA

Q.27) Minimum cross sectional area of ECC conductor:

a)   16 sq. mm

b)   90 sq. mm

c)   Depends upon the cross sectional area of phase & neutral

d)   Depends upon the earth fault current of supplied load

Q.28) Sub main distribution board must be:

a)   Factory assembled

b)   Site assembled

c)   Factory and site assembled

d)   SMDBs are not acceptable in LV switchgear

Q.29) Which of the below is true about the installation of conduits and trunking:

a)   The cables or wires must be drawn before the installation of conduits

b)   The conduits must be installed before drawing of cables or wires

c)   Trunking is not suitable for the power cables

d)   Conduits are only acceptable as connected to walls or slab

Q.30) What is the minimum area required for 1 x 1000/1500 kVA transformer in basement

a)   21  sq. m(with minimum width of 4.57 mtr)

b)   42 sq. m(with minimum width of 6.1 mtr)

c)   30 sq. m (with minimum width of 3 mtr)

d)   38 sq. m (with minimum width of 5 mtr)

Answer Key:

Q.1 = b  (DEWA regulation 2017; Clause 11.2.6)

Q.2 = c

Q.3 = a

Q.4 = a  (DEWA regulation 2017; Clause 7.4.2)

Q.5 = a

Q.6 = a  (DEWA regulation 2017; Clause 5.2.2)

Q.7 = c  (DEWA regulation 2017; Clause 4.2.3)

Q.8 = c  (DEWA regulation 2017; Clause 5.2.5)

Q.9 = a  (DEWA regulation 2017; Appendix 7 (viii))

Q.10 = a

Q.11 = b  (DEWA regulation 2017; Clause 1.2)

Q.12 = a  (DEWA regulation 2017; Clause 3.3.8)

Q.13 = d

Q.14 = d (DEWA regulation 2017; Section 2, Definitions pg.24)

Q.15 = b

Q.16 = a  (DEWA regulation 2017; Clause 8.1.1)

Q.17 = a

Q.18 = a  (DEWA regulation 2017; Clause 4.7.2)

Q.19 = c  (DEWA regulation 2017; Appendix 12 (3))

Q.20 = a

Q.21 = d

Q.22 = b  (DEWA regulation 2017; Clause 12.2.4(c))

Q.23 = a  (DEWA regulation 2017; Clause 7.3.6)

Q.24 = c  (DEWA regulation 2017; Clause 4.7.1)

Q.25 = b  (DEWA regulation 2017; Clause 4.6.6)

Q.26 = b  (DEWA regulation 2017; Appendix 10)

Q.27 = c  (DEWA regulation 2017; Appendix 9)

Q.28 = a  (DEWA regulation 2017; Clause 4.5.1)

Q.29 = b

Q.30 = a  (DEWA regulation 2017; Clause 11.4.3)

So here I have considered 20 questions directly from DEWA regulation document and other questions are all mostly within the knowledge range of Electrical engineers. You have to score 70% marks to win this exam. So if you follow the DEWA regulations document closely, you can win this exam easily. 

Good luck friends!

Dubai Municipality Exam for Electrical Engineer

Hello friends,

Dubai municipality conducts an interview and written test for technical staff(Engineers) of the contractors in Dubai. It is a necessary thing if your company (contractor) have to validate a technical activity in the trade license to do contracting/technical works in Dubai (which includes Civil & Electrical works )

I am an Electrical Engineer and I have attended this exam twice. I was disqualified the first time I attended this exam. Actually, it was very easy. I failed it because I didn't know about the syllabus or pattern of questions which was about to ask. I searched everywhere on the internet and asked many friends and colleagues about the exam syllabus & pattern, but nobody knew anything regarding the syllabus of this exam. So I had to attend it without any clue about the exam syllabus. And without surprise, I failed. But I got a chance to learn from my mistake, and I did pretty well in the second exam. So now I want to help those who are going to attend this exam without any clue like me. The document that helped me to win this test was the DEWA regulations for electrical installations 1997 edition. This is the link where you can download it.http://www.iiee-uae.org/wp-content/uploads/2011/05/DEWA-Regulations-for-Elect-Insatallations-1997-Edition.pdf

Now there is a new edition of DEWA regulations for electrical installations 2017 edition. This is the link where you can download it:
https://www.dewa.gov.ae/~/media/DEWA%20Regulations%20for%20Electrical%20Installations%20%202017%20Edition.ashx

For the first exam, there was forty(40) multiple choice questions which were all about regulations followed by Dubai Electricity and Water Authority (DEWA) for Electrical Installations. You can cover most of the questions if you study the DEWA regulation document thoroughly.

For the second exam, there were only thirty(30) multiple choice questions, which was also all about the regulations followed by DEWA, but the syllabus was not completely included in the DEWA regulation document. Out of thirty questions, eighteen(18) was asked from the DEWA regulation document and rest was about a similar subject like lighting, dimensions of the substation, fire alarm systems etc.

I was qualified in the second exam, so I don't know what will be the questions for the third time.

You have to score seventy percentage(70%) to qualify in this exam. Most of the questions for this exam will be about the common regulations that are followed in the emirate of Dubai, like "what is the acceptable power factor of an installation" or "what is the maximum number of sockets allowed in a ring circuit", etc. So if you have experience in electrical fitting in Dubai, you can easily pass this exam. Or you can qualify this if you study the DEWA regulation document good enough.

If you get qualified in this exam, your company will be approved by Dubai Municipality to do Electrical Fit-out/Contracting activity mentioned in the Commercial trade license issued by Economic Department of Dubai.

This exam is applied online through Dubai Municipality web portal, and the cost of this exam was AED 400 which is also paid online.

You have to upload the following documents to apply for the exam through the Dubai municipality portal.
1) Degree certificate attested by Ministry of foreigners affairs.
2) Society of Engineers membership card copy(or an undertaking letter promising to submit this within one month or so)
3) Trade license of your company
4) Copy of your passport and visa
5) NOC from your sponsor/company.
Complete details of the application are given in this link:
 https://portal.dm.gov.ae/SCWebUI/datadetails.aspx?servicecode=3391&DeptId=19

Also, you have to bring all original documents and its one set copies to attend the exam.

The results are published mostly on the same day you write the exam but may get delayed.

I have posted a Model question paper for the exam as a new post in this same blog since I am getting emails & comments asking for the question patterns regularly. Please note that those questions shown are just for you to get a basic idea about the question patterns which may ask in the exam. You have to study the DEWA regulation document completely if you want to succeed in this exam.

I hope this post was helpful and not too long.

Good luck friends.