Industries Extension Officer Synchronous motor mcq part2

March 30, 2019

Industries Extension Officer Synchronous motor mcq part2



11. In a 3-phase synchronous motor
A. the speed of stator MMF is always more than that of rotor MMF
B. the speed of stator MMF is always less than that of rotor MMF.
The speed of stator MMF is synchronous speed while that of
rotor MMF is zero.
D. rotor and stator MMF are stationary with respect to each other


12. A salient pole synchronous motor is running at no load. Its field
current is switched off. The motor will
A. come to stop.
B. continue to run at synchronous speed
C. continue to run at a speed slightly more than the synchronous speed
D. continue to run at a speed slightly less than the synchronous speed


13. Asynchronous motor is called a synchronous capacitor, when it is:
A. under loaded
B. under excited
C. over excited
D. overload


14. The size of a synchronous motor is determined by the its..
A.KVA rating
B. kW rating
C. KVAR rating
D. none of the above


15. The synchronous speed for a 3 phase 6-pole induction motor is 1200
rpm. If the number of poles is now reduced to 4 with the frequency
remaining constant, the rotor speed with a slip of 5% will be.
A. 1690 rpm B.1750 rpm C. 1500 rpm D. 1710 rpm


16. The maximum power for a given excitation in a synchronous motor
is developed when the power angle is equal to
A.
B.45
C. 60
D.90



17. Asynchronous motor delivers reactive power when.....
A. over excited
B. under excited
C. normally excited
D. none of the above


18. In synchronous motor out of the following losses, which one will
have the highest proportion ?
A. stator copper losses
B. friction and windage losses
C. eddy current losses
D. iron losses


19. The capacity of a synchronous capacitor is generally in the range of
A. VAR B.MVAR C .KVAR D. none of the above


20.
The cost of leading power factor synchronous motor is. .. unity
power factor motors
B. more than
A. less than
C. about the same
D. none of the above
Industries Extension Officer Synchronous motor mcq part2 Industries Extension Officer Synchronous motor mcq part2 Reviewed by Bibi Mohanan on March 30, 2019 Rating: 5

Industries Extension Officer Synchronous Motors MCQs

March 30, 2019

SYNCHRONOUS MOTORS


11.A three phase synchronous motor will have:
A.no slip rings
B. three slip rings
C. four slip rings
D. two slip rings

2.When a synchronous motor is running at synchronous speed, the
damper winding produces
A. damping torque
B. eddy current torque
C. torque aiding the developed torque. 
D. no torque

3. A motor which can conveniently be operated at lagging as well as leading power factors is the
A. squirrel cage induction motor. 
B. wound rotor induction motor
C. synchronous motor
D. DC shunt motor


5. The max'm speed of a synchronous motor in India is:
A. 1500 rpm. B. 1000 r.p.m C. 750 rpm. D.3000 rpm.
The rotor of a synchronous motor is excited with DC when the motor
A. is at standstill 
B. approaches synchronous speed
C. approaches half synchronous speed 
D. none of the above


6. KW rating of synchronous motor exciter is about ....% of the KVA rating of synchronous motor
A. 3
B.
SEC. 10
D. 15

7.
Synchronous speed of an induction motor is always:
A. equal to rotor speed
B. greater than rotor speed
C. twice the rotor speed
D. less than rotor speed

8.
Synchronous speed of an induction motor is 1000 rpm.
What will be the rotor speed, if slip is 3%
A. 30 rpm
B.300 rpm. C. 1700 rpm D.970 rpm


9Asynchronous motor, connected to an infinite bus is working at
leading p.f. It's excitation is
A. less than supply voltage Vs
B. equal to Vs
C.> Vs
D. none of these

10. Synchronizing power comes into play when the rotor speed is
A. equal to Synchronous speed Ns
C. SNs
D. either more
Industries Extension Officer Synchronous Motors MCQs Industries Extension Officer Synchronous Motors MCQs Reviewed by Bibi Mohanan on March 30, 2019 Rating: 5

Industries Extension officer Rank file|Books for Industries Extension officer

March 30, 2019

Industries Extension officer Rank  file|Books for Industries Extension officer



In this post I will discuss about the important books for the preparation of Industries Extension officer Exam.

First of Let us go through the syllabus

Syllabus:

An Objective Type Test 

 Part I : Questions based on Educational qualification
Part II: GK, Current Affairs and Renaissance of Kerala

Main Topics:-

Part I - Basic Civil Engineering
Part II - Basic Mechanical Engineering
Part III - Basic Electrical Engineering
Part IV - Basic Electronics
Part V - Basic Computer Science

Industries Extension officer Rank  file


This book is published by Electron college; it is a good book for kick starting the preparation of Industries Extension officer .

you can check it Here. Buy it HERE

you can also check other books in My Notebook Store


Also check ;
Industries Extension officer Rank file|Books for Industries Extension officer Industries Extension officer Rank file|Books for Industries Extension officer Reviewed by Bibi Mohanan on March 30, 2019 Rating: 5

Industrial Extension officer Ranklist 2010

March 30, 2019

Industrial Extension officer Ranklist 2010

You can watch the detailed Video HERE
Click Here to download official notification of IEO 2012
The Exam category Number: 403/2010
Number of candidates : 10642
Exam on : 02/03/2012, Friday    08.00 AM to  09.15 AM
(Maximum Marks : 100)
(Duration: 1.15 Hours)
( Medium of Questions: English )
Final Answer Key of Industries Extension officer
Shortlist Published on: 08/07/2013
You can download it HERE
Ranklist Published on: 22/04/2014
Ranked List No. 236/14/SSIV
You can download the Ranklist HERE

Syllabus:

An Objective Type Test (OMR - Valuation) based on the qualification prescribed for the post

Main Topics:-

Part I - Basic Civil Engineering
Part II - Basic Mechanical Engineering
Part III - Basic Electrical Engineering
Part IV - Basic Electronics
Part V - Basic Computer Science

 Visit EEE Made Easy for Study Materials

 Industries Extension officer Rank file BUY Here
Other Books for Industries Extension officer can be bought from HERE
You can Visit My Notebook Store also
WATCH INDUSTRIES EXTENSION OFFICER Coaching Classes HERE

Read also;

  1. Industries Extension officer 2018 Notification,Syllabus, Preparation Strategy etc
  2. Books for Industries Extension officer

Important Play lists:

Industrial Extension officer Coaching
Railway JE/ SSC JE Coaching 
Basic Electrical Engineering
Basic mechanical Engineering
Basic Electronics Engineering
Basic Civil Engineering 

 You can watch the detailed Video HERE
Click Here to download official notification of IEO 2012
The Exam category Number: 403/2010
Number of candidates : 10642
Exam on : 02/03/2012, Friday    08.00 AM to  09.15 AM
(Maximum Marks : 100)
(Duration: 1.15 Hours)
( Medium of Questions: English )
Final Answer Key of Industries Extension officer
Shortlist Published on: 08/07/2013
You can download it HERE
Ranklist Published on: 22/04/2014
Ranked List No. 236/14/SSIV
You can download the Ranklist HERE

Syllabus:

An Objective Type Test (OMR - Valuation) based on the qualification prescribed for the post

Main Topics:-

Part I - Basic Civil Engineering
Part II - Basic Mechanical Engineering
Part III - Basic Electrical Engineering
Part IV - Basic Electronics
Part V - Basic Computer Science
Visit EEE Made Easy for Study Materials
Industries Extension officer Rank file BUY Here
Other Books for Industries Extension officer can be bought from HERE
You can Visit My Notebook Store also
WATCH INDUSTRIES EXTENSION OFFICER Coaching Classes HERE

Read also;

  1. Industries Extension officer 2018 Notification,Syllabus, Preparation Strategy etc
  2. Books for Industries Extension officer

Important Play lists:

Industrial Extension officer Coaching
Railway JE/ SSC JE Coaching 
Basic Electrical Engineering
Basic mechanical Engineering
Basic Electronics Engineering
Basic Civil Engineering 
Industrial Extension officer Ranklist 2010 Industrial Extension officer Ranklist 2010 Reviewed by Bibi Mohanan on March 30, 2019 Rating: 5

RRB JE Previous year paper Solved|RRB JE Solved questions

March 24, 2019

 RRB JE Previous year paper Solved|RRB JE S0lved questions



116. Consider the following statements and select the difference between Chaitya and Vihara
A. Chaitya is a place of worship whereas Vihara is a living place for Buddhist saints
B. Vihara is a place of worship whereas Chaitya is a living place for Buddhist saints
C. Chaitya and Vihara both can be used as a living place
D. There is not much difference between the two

Ans. A.

117. The world famous Takht-i-Taus (the Peacock Throne) was kept in which of the following Mughal buildings?
A. The Diwan-i-Khas at Fatehpur Sikri
B. Agar Fort
C. The Rang Mahal at the Red Fort at Delhi
 D. The Diwan-i-Aam at the Red Fort at Delhi

Ans. D.

118. With reference to the colonial rule in India, consider the following events 
 1. Morely-Minto Reforms Act 
2. Transfer to capital from Calcutta to Delhi 
 3. First World War 
4. Lucknow Pact  .The correct chronological order of these events is

A. 2, 1, 3, 4 
 B. 1, 2, 3, 4
C. 2, 1, 4, 3
D. 1, 2, 4, 3

Ans. B.

119. The latitudes that pass through Sikkim also pass through
A. Rajasthan 
B. Jammu and Kashimir
C. Himachal Pradesh
D. Punjab 
Ans. A.

120. River Indus originates from
A. Hindukush Range 
 B. Himalayan Range
C. Karakoram Range 
D. Kailash Range
Ans. D.

121. Currently half of the world’s population lives in just six countries. Identify them from the following.
A. India, China, Bangladesh, Pakistan, Brazil, Indonesia
B. India, China, United States, Indonesia, Brazil, Pakistan
C. China, India, United States, Indonesia, Brazil, Pakistan
D. China, India, Bangladesh, United States, Pakistan, Indonesia
Ans. C. 

122. If a ship moves from fresh water not sea water, it will
A. sink completely
B. sink a little bit
 C. rise a tittle higher
 D. remain unaffected
Ans. C.

123. The focal length of a convex lens is

A. same for all the colours
B. shorter for blue light than for red
 C. shorter for red light than for blue
D. maximum for yellow light
Ans. B.

124. Which of the following is not correctly matched
A. Decibel-unit of sound
B. Horse power-Unit of power
C. Nautical mile-unit of distance
 D. Celsius-unit of heat
 Ans. D.

125. For distribution of powers between the union and the states, the constitution of India introduce three lists. Which two of the following Articles govern the distribution of power:

 A. Articles 3 and 4
B. Articles 56 and 57
C. Articles 141 and 142
 D. Articles 245 and 246

Ans. D.

126. Which of the following can a court issue for enforcement of Fundamental Rights?
 A. A decree
B. An ordinance
C. A writ
D. A notification

Ans. C.

127. Twenty point Programme’ (Bees-kutri Karyakrama) was first launched in the Year
 A. 1969
B. 1975
C. 1977
D. 1982

Ans. B.

128. Among other things, which one of the following was the purpose for which the Deepak Parekh Committee was constituted
 A. To study the current socio-economic conditions of certain minority communities
B. To suggest measures for financing the development of infrastructure
C. To frame a policy on the production of genetically modified organisms
D. To suggest measures to reduce the fiscal deficit in the Union Budget.

Ans. B. 


RRB JE Previous year paper Solved|RRB JE Solved questions RRB JE Previous year paper Solved|RRB JE Solved questions Reviewed by Bibi Mohanan on March 24, 2019 Rating: 5

Building Materials- BRICKS Basic Civil Engineering Industrial Extension officer Coaching

March 09, 2019

Building Materials- BRICKS Basic Civil Engineering Industrial Extension officer Coaching



INDUSTRIAL EXTENSION OFFICER|EEEMADE EASY|BIBIMOHANAN


For Free Coaching Classes Visit EEE Made Easy Youtube Channel

Download PDF; link at the bottom of this page

Basic Civil Engineering-set 4

BRICKS

Contents




Brick


obtained by mouldinggood clay into a block, which is dried and then burnt.
oldest building block to replace stone
Manufacture of brick started with hand moulding, sun drying and
burning in clamps


Size


The size of the bricks are of 90 mm ×90 mm ×90 mm and 190 mm ×90 mm ×40 mm.
With mortar joints, the size of these bricks are taken as 200 mm ×100 mm ×100 mm and 200 mm ×100 mm×50 mm

Types of Bricks



Bricks may be broadly classified as:
(i) Building bricks
(ii) Paving bricks
(iii) Fire bricks
(iv) Special bricks

(i) Building Bricks: These bricks are used for the construction of walls.
(ii) Paving Bricks: These are vitrified bricks and are used as pavers.
(iii) Fire Bricks: These bricks are specially made to withstand furnace temperature. Silica bricks
belong to this category.

(iv) Special Bricks: These bricks are different from the commonly used building bricks with
respect to their shape and the purpose for which they are made. Some of such bricks are listed below:
(a) Specially shaped bricks
(b) Facing bricks
(c) Perforated building bricks
(d) Burnt clay hollow bricks
(e) Sewer bricks
( f ) Acid resistant bricks.

Properties of Bricks


(i) Colour: Colour should be uniform and bright.
(ii) Shape: Bricks should have plane faces. They should have sharp and true right-angled corners.
(iii) Size: Bricks should be of standard sizes as prescribed by codes.

(iv) Texture: They should possess fine, dense and uniform texture. They should not possess fissures, cavities, loose grit and unburnt lime.
(v) Soundness: When struck with a hammer or with another brick, it should produce metallic sound.
(vi) Hardness: Finger scratching should not produce any impression on the brick

. (vii) Strength: Crushing strength of brick should not be less than 3.5 N/mm2. A field test for strength is that when dropped from a height of 0.9 m to 1.0 mm on hard ground, the brick should not break into pieces.

(viii) Water Absorption: After immersing the brick in water for 24 hours, water absorption should not be more than 20 per cent by weight. For class-I works, this limit is 15 per cent.

(ix) Efflorescence: Bricks should not show white patches when soaked in water for 24 hours and then allowed to dry in shade. White patches are due to the presence of sulphate of calcium, magnesium and potassium. They keep the masonry permanently in damp and wet conditions

. (x) Thermal Conductivity: Bricks should have low thermal conductivity so that buildings built with them are cool in summer and warm in winter.

(xi) Sound Insulation: Heavier bricks are poor insulators of sound while lightweight and hollow bricks provide good sound insulation.

(xii) Fire Resistance: Fire-resistance of bricks is usually good. In fact, bricks are used to encase steel columns to protect them from fire.

Tests on Bricks


to find their suitability:
(i) Crushing strength
(ii) Absorption
(iii) Shape and size and
(iv) Efflorescence.


(i) Crushing Strength:

The brick specimen is immersed in water for 24 hours.
The frog of the brick is filled flush with 1:3 cement mortar and the specimen is stored in a damp jute bag for 24 hours
and then immersed in clean water for 24 hours.
The specimen is placed in a compression testing machine with 6 mm plywood on top and bottom of it to get a uniform load on the specimen.
Then the load is applied axially at a uniform rate of 14 N/mm2.
The crushing load is noted. Then the crushing strength is the ratio of crushing load to the area of brick loaded. Average of five specimens is taken as the crushing strength.

(ii) Absorption Test:

The brick specimen is weighed dry. Then they are immersed in water for a period of 24 hours. The specimen is taken out and wiped with a cloth. The weight of each specimen in a wet condition is determined. The difference in weight indicates the water absorbed. Then the percentage absorption is the ratio of water absorbed to dry weight multiplied by 100. The average of five specimens is taken. This value should not exceed 20 per cent.

(iii) Shape and Size:

Bricks should be of standard size and edges should be truly rectangular with sharp edges. To check it, 20 bricks are selected at random and they are stacked along the length, along the width and then along with the height.
For the standard bricks of size 190 mm ×90 mm ×90 mm.
IS code permits the following limits:
Lengthwise: 3680 to 3920 mm
Widthwise: 1740 to 1860 mm
Heightwise: 1740 to 1860 mm

field tests help in ascertaining the good quality bricks:
(i) uniformity in size
(ii) uniformity in colour
(iii) structure
(iv) hardness test
(v) sound test
(vi) strength test


Classification of Bricks Based on their Quality

(i) First-class bricks
(ii) Second class bricks
(iii) Third class bricks and
(iv) Fourth class bricks

(i) First Class Bricks:

These bricks are of standard shape and size. They are burnt in kilns. They fulfil all the desirable properties of bricks.

(ii) Second Class Bricks:

These bricks are ground moulded and burnt in kilns. The edges may not be sharp and uniform. The surface may be somewhat rough. Such bricks are commonly used for the construction of walls which are going to be plastered.

(iii) Third Class Bricks:

These bricks are ground moulded and burnt in clamps. Their edges are somewhat distorted. They produce dull sound when struck together. They are used for temporary and unimportant structures.

(iv) Fourth Class Bricks:

These are the over burnt bricks. They are dark in colour. The shape is irregular. They are used as aggregates for concrete in foundations, floors and roads

Uses of Bricks

Bricks are used in the following civil works:
(i) As building blocks.
(ii) For the lining of ovens, furnaces and chimneys.
(iii) For protecting steel columns from fire.
(iv) As aggregates in providing waterproofing to R.C.C. roofs.
(v) For pavers for footpaths and cycle tracks.
(vi) For lining sewer lines


Detailed Syllabus of Industrial Extension officer Watch HERE


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www.bibimohanan.com“My Notebook Blog”
www.eeemadeeasy.com–“ EEE Made Easy” blog for study materials

Building Materials- BRICKS Basic Civil Engineering Industrial Extension officer Coaching Building Materials- BRICKS Basic Civil Engineering Industrial Extension officer Coaching Reviewed by Bibi Mohanan on March 09, 2019 Rating: 5
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