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RSMSSB JE Civil Mock Test - 1 Free Online Test 2026


Full Mock Test & Solutions: RSMSSB JE Civil Mock Test - 1 (120 Questions)

You can boost your Civil Engineering (CE) 2026 exam preparation with this RSMSSB JE Civil Mock Test - 1 (available with detailed solutions).. This mock test has been designed with the analysis of important topics, recent trends of the exam, and previous year questions of the last 3-years. All the questions have been designed to mirror the official pattern of Civil Engineering (CE) 2026 exam, helping you build speed, accuracy as per the actual exam.

Mock Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 120 minutes
  • - Total Questions: 120
  • - Analysis: Detailed Solutions & Performance Insights
  • - Sections covered: General Knowledge, Engineering Civil

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RSMSSB JE Civil Mock Test - 1 - Question 1

Which state sent military help for the assistance of the Maharao of Kota in the freedom struggle of 1857?

Detailed Solution: Question 1

The correct answer is Karauli.

Key Points

  • Karauli state sent military help for the assistance of the Maharao of Kota in the freedom struggle of 1857.
  • With the help of the state of Kota, Karauli sent its army during the 1857 revolt.
  • Historically, Karauli was ruled by a maharaja, who was also the head of the Jadon clan of Rajputs and claimed descent from the deity Krishna.
    • In 1196, his descendant Kunwar Pāl lost all of his territories to the invading Ghurid Dynasty. The territory was not recovered until approximately 1327.
  • On 9 November 1817, Karauli became the first state to conclude the treaty with the British Empire.
    • Through an agent in Delhi, its maharaja Harbaksh Pal Deo assented to becoming a protectorate state.
    • Mehrab Khan was the Risaldar of the Kota army and a resident of Karauli.
    • He along with Lala Jaidayal participated in the 1857 revolt. They both were killed.
    • After India's independence in 1947, the state under Maharaja Ganesh Pal Deo acceded to the Dominion of India on 7 April 1949.
    • Karauli later merged with the Union of India and became part of the state of Rajasthan.

RSMSSB JE Civil Mock Test - 1 - Question 2

Pratap Singh Barhath was imprisoned in which of the following conspiracy case?

Detailed Solution: Question 2

The correct answer is Banaras conspiracy case.

Key Points

  • Pratap Singh Barhath:
    • Pratap Singh Bharat​ was Born in Udaipur.
    • He was an activist in Rajasthan and joined a revolutionary party by following Ras Bihari Bose to throw a bomb at Lord Hardinge, Viceroy of India.
    • He was arrested in the Banaras Conspiracy Case and sentenced to five years.
    • He was subjected to brutal torture in Bareilly Central Jail to reveal the names of his supporters. He died in jail as an unsung hero.
    • His famous quote is “I can't let thousands of mothers cry to stop my mother crying”.​

RSMSSB JE Civil Mock Test - 1 - Question 3

Who among the following belonged to Mewar Praja Mandal?

Detailed Solution: Question 3

The correct answer is Manikyalal Verma.

Key Points

  • Manikya Lal Verma was born on 4 December 1887 in Bijolia, Rajasthan.
    • He was the founder of Mewar Praja Mandal.
    • The first president of Mewar Praja Mandal was Balwant Singh Mehta.
    • He participated in the Bijolia Kisan Andolan along with Vijay Singh Pathik and Jamnalal Bajaj.
    • Manikya Lal Verma used to inspire farmers through his Panchida Geet.
    • He was a member of the Constituent Assembly in 1949.
    • He was the Prime Minister of Rajasthan before the complete formation of the state.

RSMSSB JE Civil Mock Test - 1 - Question 4

Match the following:

Select the correct answer from the options given below

Detailed Solution: Question 4

The correct answer is 1-A, 2-B, 3-C.

Key Points

  • The table below is correctly matched:

Additional Information

  • Rajasthan Sewa Sangh:
    • Efforts of Vijay Singh Pathik, Arjunlal Sethi, Jamnalal Bajaj, Kesri Singh Barhath, Haribhai Kinkar & Ramnarayan Choudhary.
  • Rajasthan Harijan Sewa Sangh:
    • President: Ghansyamdas Birla.
    • Rajputana Branch Head: Haryilas Sharda
    • Sewa Ashram, Nareli Village,Ajmer - est. by Manikyalal Verma
  • Marwar Sewa Sangh:
    • Founder: Durgashankar (President) & Prayagraj Bhandari (Minister).

RSMSSB JE Civil Mock Test - 1 - Question 5

In which district of Rajasthan the fair of Sitabari is organised?

Detailed Solution: Question 5

The correct answer is Baran.

Key Points

  • Sitabari:-
    • Sitabari is a pilgrimage site located in the Baran district of Rajasthan, India.
    • It holds significance in Hindu mythology and is associated with the epic Ramayana.
    • Sitabari is believed to be the place where Sita, the wife of Lord Rama, spent a part of her exile period during their 14-year journey in the forest.
    • According to the legend, Sita entered the Earth here, creating a small depression in the ground known as "Sitapadi" or "Sitabari."
    • Siatabari Fair is organised in the city of Baran.
  • Baran:-
    • It is a district in southeastern Rajasthan, India.
    • The district is known for its natural beauty, with the Parvati River flowing through it and lush landscapes.
    • The Kakoni village in Baran is famous for its prehistoric rock paintings, showcasing the ancient art and culture of the region.
    • Baran has several wildlife reserves and sanctuaries, such as the Darrah Wildlife Sanctuary, which is home to various species of flora and fauna.

Additional Information

  • Barmer:-
    • This is a district located in the western part of the state of Rajasthan, India.
    • It is known for its rich cultural heritage, historical sites, and desert landscapes.
    • Barmer is famous for its folk music and art, including traditional dance forms and intricate handicrafts.
  • Bikaner:-
    • It is a city in the northwestern state of Rajasthan, India.
    • It was founded in the late 15th century by Rao Bika, a
    • The city has a rich history and is known for its historical and cultural heritage.
    • Bikaner is famous for its well-preserved forts, palaces, and havelis (traditional mansions). The Junagarh Fort, Lalgarh Palace, and Karni Mata Temple (known for its rats) are popular attractions.
  • Bundi:-
    • It is known for its historic and artistic significance.
    • The city is famous for its intricate and beautiful step wells, known as "baoris."
    • The most well-known is the Raniji ki Baori, which showcases impressive architecture.
    • The Bundi Palace is a notable attraction, showcasing Rajput architecture and stunning frescoes.
    • Ranakpur Temples: The Ranakpur Jain temples, though not located in Bundi itself, are a nearby attraction. They are renowned for their intricate marble architecture.

RSMSSB JE Civil Mock Test - 1 - Question 6

What is the height of the 'Gandhi Sagar Dam'?

Detailed Solution: Question 6

The correct answer is 62 meters.

Key Points

  • Gandhi Sagar Dam -
    • It is located at a distance of 168 km from the Mandsaur district headquarters of Madhya Pradesh.
    • This dam has been constructed on the Chambal river.


Additional Information

  • The foundation stone for the construction of this power station was laid by Prime Minister Pandit Jawaharlal Nehru on March 7, 1954.
  • Work on the power station was started in 1957, while power generation and distribution were started in November 1960.
  • This power station is 65 meters tall and 56 feet wide.
  • The power station has five turbines of 23 MW each, thus the total installed capacity is 115 MW.
  • This power station now supplies electricity to the entire district.
  • Electricity from the powerhouse is supplied far and wide in the state of Madhya Pradesh and Rajasthan.

RSMSSB JE Civil Mock Test - 1 - Question 7

Which of the following statements about the State Election Commission (SEC), Rajasthan is incorrect?

Detailed Solution: Question 7

The correct answer is "This commission deals with human and child rights.".

Additional Information:

About Rajasthan State Election Commission:

  • ​Constituted In: July 1994.
  • Constituted under Article 243K of the Constitution of India.
  • It is a single member Commission headed by the State Election Commissioner.
  • It has a Secretary who is also the Chief Electoral Officer for the State.
  • Duties:
    • ​Preparing electoral rolls.
    • Holding elections for Panchayati Raj Institutions as well as for Municipal bodies.
  • This commission conducts elections to the municipal bodies under Article 243ZA.
  • Present Chief Election Commissioner of Rajasthan : Shri Madhukar Gupta.

RSMSSB JE Civil Mock Test - 1 - Question 8

On which date, the Rajasthan Guaranteed Delivery of Public Services Act - 2011 came into force?

Detailed Solution: Question 8

The correct answer is 14th November 2011.

The Government of Rajasthan introduced the Guaranteed Delivery of Public Services Act on 14 November 2011, the birth anniversary of Pandit Jawaharlal Nehru.

  • It came into force with the aim of providing public services in a time-bound manner.
  • The initial Act included 108 services of 15 major government departments, envisaged time-bound performance of duties by government officials, and provided for cash penalties for offenders.
  • At present, 153 services covering 18 departments including 11 services of the Department of Local Self Government are covered under the Act.

Important Points

  • Madhya Pradesh was the first state to introduce the Guaranteed Delivery of Public Service Act on 18 August 2010.
  • Rajasthan was the first state in India where the state government made provisions for penalties imposed for failure or delay in providing service.

RSMSSB JE Civil Mock Test - 1 - Question 9

Parwan, Niwaz and Ahu are tributaries of -

Detailed Solution: Question 9

The correct answer is Kali Sindh.

Key Points

  • The Kali Sindh River is the biggest river flowing in the Malwa region of Madhya Pradesh state.
  • The popular place where the Kali Sindh River enters in Rajasthan is in Binda village.
  • Ahu, Parwan, Niwaz, and Ujas are the tributaries.

Additional Information

  • The total distance covered by the Kali Sindh River in Rajasthan is 145 kilometers.
  • The river later on merges in Chambal River which is flowing in the Kota district of Nonera Village.
  • On this river there is a Harishchandra dam in Kota.

RSMSSB JE Civil Mock Test - 1 - Question 10

The 'Kheri' breed of sheep is found in

Detailed Solution: Question 10

Kheri, the carpet wool sheep of Rajasthan is considered to have originated from a crossbred base with unknown levels of inheritance of Marwari Malpura and Jaisalmeri sheep of Rajasthan.

The Kheri Sheep are distributed largely in the Nagaure, Jodhpur, and Tonk districts of Rajasthan

Additional Information

  • Kheri sheep are medium to large-sized animals and are relatively heavier than Marwari sheep.
  • Kheri locally refers to a color pattern having a mixture of black and brown.
  • The animals of this breed have a black-brown face, sometimes extending up to the neck and/or spots on the legs, with a white body.

Kheri Sheep:

  • Sheep evolved in the farmer's flock under the field conditions, especially in the areas that are important for sheep migration in Rajasthan appears to be a need of migratory sheep breeders.
  • The animals of this breed have been established owing to their ability to walk long distances and ability to survive on a limited amount of coarse feed.
  • The animals of this breed can sustain stress and on return to favorable conditions regain faster resulting in a better reproduction rate and growth of lambs as compared to prevalent breeds in the area.

RSMSSB JE Civil Mock Test - 1 - Question 11

Which of the following city is not located on National Highway 8 (NH 8)?

Detailed Solution: Question 11

The National Highways Authority of India (NHAI) is responsible for the development, maintenance and management of National Highways in the country. National Highways are the arterial roads of the country for inter-state movement of passengers and goods.

Key Points

  • National Highway 8 (NH 8) is a 4-lane (6-lane in most parts) National Highway in India.
  • It connects the national capital Delhi to the financial capital Mumbai, as well as important cities Gurgaon, Jaipur, Ajmer, Udaipur, Beawar, Ahmedabad, Vadodara, Surat, Nadiad, Anand and Kheda.

Additional Information

There is a total of 20 national highways with a total stretch of 6373 kms in Rajasthan including NH-3, NH-8, NH-11, NH-12, NH-14, NH-15, etc.

RSMSSB JE Civil Mock Test - 1 - Question 12

'Chikni Kothli' is

Detailed Solution: Question 12

The correct answer is A wedding ritual.

Key Points

  • 'Chikni Kothli' is a Marwari wedding ritual.

Additional Information

  • About Rajasthan
    • Current Governor: Haribhau Kisanrao Bagade
    • Capital: Jaipur (Executive Branch)
    • Current Chief minister: Bhajanlaal Sharma
    • Rajya Sabha Seats: 10
    • Lok Sabha Seats: 25

RSMSSB JE Civil Mock Test - 1 - Question 13

In which districts American cotton is produced in Rajasthan?

Detailed Solution: Question 13

The correct answer is Banswara, Ganganagar.

American cotton in Rajasthan is produced in Banswara, Hanumangarh, and Sriganganagar.

Key Points

  • Types of Crops:
    • Rabi Crops - Wheat barley, gram, mustard, lentils, peas, linseed,
    • Kharif Crops - Bajra, Jowar, Groundnut, Cotton, Maize, Sugarcane, Soyabean, Rice etc.
    • Zaid crops - Watermelon, Cucumber
  • Some institutes in Rajasthan:
    • Central Agricultural Research Institute - Durgapura (Jaipur)
    • Suratgarh Mechanical Agriculture Farm - Shri Ganganagar
    • Jaitsar Mechanical Agriculture Farm - Sri Ganganagar

RSMSSB JE Civil Mock Test - 1 - Question 14

As per IS 456 ∶ 2000, minimum shear reinforcement in the form of stirrups in beams shall NOT be less than ____________, where, b = breadth of beam, sv = stirrups spacing along the length of member, and fy = characteristic strength of the stirrup reinforcement in N/mm2.

Detailed Solution: Question 14

The minimum shear reinforcement to be provided as per the code:

Where,

Asv = Total cross sectional area of stirrup legs effective in shear
Sv = Stirrup spacing along the length of the member in mm
b = width of the beam
fy = Characteristics strength of the stirrup reinforcement in MPa ≤ 415 MPa

RSMSSB JE Civil Mock Test - 1 - Question 15

What do you understand by the given relation related to highway pavement design?

Detailed Solution: Question 15

Rigidity Factor:
The ratio of contact pressure to tyre pressure is defined as the rigidity factor.
Rigidity factor = Contact pressure (Pc)/Tyre pressure (P)

R = Pc/P

Where,

Contact pressure = Load on wheel / Contact area
Tyre pressure = Pressure inside the tyre

Important Points

  • The rigidity factor shows the degree of tension developed in the tyre. When tyre pressure is low, the walls of the tyre are subjected to compression and when tyre pressure is high walls are subjected to tension.
  • Tyre pressure is effective in the surface layer while contact pressure is effecting throughout the thickness of the pavement i.e. thickness of the pavement is affected by contact pressure, not by tyre pressure but contact pressure depends on tyre pressure.

RSMSSB JE Civil Mock Test - 1 - Question 16

On a highway, if the velocity of a moving vehicle on a lane is 40 km/h, stopping distance is 20 m and average length of vehicles is 5 m, what is the basic capacity of the lane?

Detailed Solution: Question 16

Concept:
Basic capacity or theoretical maximum capacity (C)


Where, V = Velocity of vehicles in km/hr, S = Centre to centre spacing of vehicles

Calculation:
Given
Velocity of moving vehicle (v) = 40 km/hr
Stopping distance (SD) = 20 m
Average length of vehicles (Lv) = 5 m
Centre to centre spacing of vehicles (S) = SD + Lv = 20 + 5 = 25


The basic capacity of the lane is 1600 vehicles/hr. Hence option (4) is correct.

RSMSSB JE Civil Mock Test - 1 - Question 17

The gross command area for a distributary is 10,000 ha and 80% of this is culturable. The intensity of irrigation is 50% for wheat and 30% for rice. Determine the total area cultivated by wheat and rice.

Detailed Solution: Question 17

Intensity of irrigation:

  • The intensity of irrigation is the percentage of the culturable commanded area proposed to be irrigated during either a crop season or during a year.
  • The cropping intensity of irrigation can be more than 100%.
  • Annual intensity of irrigation = sum of seasonal intensity of irrigation in a year (i.e. intensity of irrigation for Rabi (%) + intensity of irrigation for Kharif (%))

Calculation:

Given, culturable command area of an irrigation field = 10000 hec ,
culturable command area = 10,000 × 0.8 = 8000 hec
Area to be irrigated = intensity of irrigation × culturable command area
= (0.5 + 0.3) × 8000 = 6400 hec

RSMSSB JE Civil Mock Test - 1 - Question 18

Identify the defect in painting in which a formation of dull patches occurs on the finished polished surface.

Detailed Solution: Question 18

Concept-

The usual defects which are found in the painting work are-

Blistering:

  • This defect is caused by the water vapour which is trapped behind the painted surface. The formation of bubbles under the film of paint occurs in this defect. It may occur from various causes such as imperfect seasoning of timber, excess oil used in final coat etc.

Bloom:

  • In this defect, the formation of dull patches occurs on the finished polished surface. It is due to the defect in paint or bad ventilation.

Fading:

  • The gradual loss of colour is known as the fading and it is mainly due to the effect of sunlight on pigments of paint.

Flaking:

  • A small portion of the painted surface is sometimes seen loose. It is known as the flaking and is due to poor adhesion.

Flashing:

  • Sometimes the glossy patches are seen on the painted surface. This is known as the flashing and it is mainly due to poor workmanship, cheap paint or weather actions.

Grinning:

  • When the final coat of paint has not sufficient opacity, the background is clearly seen. This is known as the grinning.

Running:

  • The paint runs back and leaves small areas of surface uncovered. This defect occurs when the surface to be painted is too smooth.

Sagging:

  • When a vertical or inclined surface is too thickly painted, the defect of sagging occurs.

Saponification:

  • The formation of soap patches on the painted surface is termed as the saponification and it is due to chemical action of alkalies.

Wrinkling:

  • When a horizontal surface is too thickly painted, the defect of wrinkling becomes prominent.

RSMSSB JE Civil Mock Test - 1 - Question 19

Consider the below statements with respect to retaining walls subjected to earth pressure and identify the correct answer. (Assume identical conditions for the soil)

Statement A: Active earth pressure is developed when the wall moves away from the backfill.
Statement B: The active earth pressure is greater than the earth pressure at rest.

Detailed Solution: Question 19

Statement A: This statement is correct

  • Active earth pressure arises when the retaining wall moves away from the soil, allowing the soil to expand. This results in a decreased earth pressure against the wall compared to the at-rest condition.

Statement B: This statement is incorrect.

  • In reality, the active earth pressure is less than the earth pressure at rest. The earth pressure at rest is the pressure exerted by the soil when there is no movement of the retaining wall, i.e. it's neither moving towards nor away from the backfill.
  • When the wall moves away from the soil (leading to active conditions), the pressure against the wall decreases.

RSMSSB JE Civil Mock Test - 1 - Question 20

Identify the given test apparatus that is used to determine the shear strength of soil.

Detailed Solution: Question 20

Unconfined compression test:

In this test, a cylinder of soil without lateral support is tested to failure in simple compression, at a constant rate of strain. The compressive load per unit area required to fail the specimen is called the Unconfined compressive strength of the soil.

Molded Sample: For the desired water content and the dry density, calculate the weight of the dry soil Ws required for preparing a specimen of 3.8 cm diameter and 7.5 cm long.

Therefore, In an unconfined compression test, the height to diameter ratio of the specimen is 2

where,
P = Additional axial load in N
A2 =Area of the specimen after failure

 

where,
ϵ = Strain in the specimen and A1 = Area of the specimen before the failure

RSMSSB JE Civil Mock Test - 1 - Question 21

Order the following structures with respect to their increasing static indeterminacy.

A. A two-span continuous beam hinged at one end and rollers at the other supports.
B. A two span continuous beam fixed at one end and rollers at the other supports.
C. A fixed-fixed beam with two internal hinges.
D. A one bay one storey fixed-fixed frame.

Detailed Solution: Question 21

Explanation:

Two-span continuous beam hinged at one end and rollers at the other supports

Degree of Static Indeterminacy = 2 +1 +1 -3 = 4 - 3 = 1

Two span continuous beam fixed at one end and rollers at the other supports.

Degree of Static Indeterminacy = 3 +1 +1 - 3 = 5-3 =2

A fixed-fixed beam with two internal hinges

There are two hinges in the beam hence there will be 2 releases
Degree of Static Indeterminacy = 3 +3 -1 -1 -3 = 4-3 = 1
A one bay one storey fixed-fixed frame

Degree of Static Indeterminacy = 3 +3 -3 = 6 - 3 = 3
C=A<B<D

RSMSSB JE Civil Mock Test - 1 - Question 22

In house plumbing system, the leakage of different pipes is tested by:

Detailed Solution: Question 22

There are three tests that are commonly performed to test leakage of the pipes and are as follows:

Air Test

  • Generally used to test underground and vertical pipes. The escape of air from the leaky joint form bubbles that can be seen visually.

Water Test

  • Most commonly used for underground house sewer pipes. The drain is plugged at the lower end and the water is filled in the pipe through the upper manhole to maintain a pressure of 1 to 1.5 m depth of water. If there is no drop in water level in 10 minutes, then there is no leakage from the pipe.

Smoke Test

  • Generally used to detect leakage of existing vertical sullage pipe or rainwater pipes. In this test, smoke is forced into the pipe with the help of blower to test the leakage.

RSMSSB JE Civil Mock Test - 1 - Question 23

According to Rankine's formula minimum depth of foundation when q = 180 kN/m2, γ = 20 kN/m3 and ϕ = 30° is -

Detailed Solution: Question 23

Concept:

Rankine's formula provides guidance on the minimum depth of foundation based on the bearing capacity of the soil.

Therefore the depth of the foundation can be expressed as,

Where Df = Minimum depth of foundation, qu = Ultimate bearing capacity of the soil

Calculation:

Intensity of loading (qu) =180 kN/m2,

Unit weight = 20 kN/m3 and angle of internal friction (ϕ) = 30°

Depth of foundation =

Depth of foundation (Df) = 1.0 m

Hence, According to Rankine's formula, the minimum depth of foundation is 1.0 m.

RSMSSB JE Civil Mock Test - 1 - Question 24

The Moment Distribution Method was developed by Hardy Cross in

Detailed Solution: Question 24

Moment distribution method:
It was invented to analyze the indeterminate structures by Hardy Cross in 1930. In this method, the internal moments at the joints are distributed and balanced until the joints have rotated to their final or nearly final position.

  • It is a displacement method of analysis
  • The process is repetitive and easy to apply
  • In the moment distribution method, the carryover moment is equal to one-half of its corresponding moment with the same sign.

The steps regarding the moment distribution method are;

  1. Find the fixed end moments
  2. Determine the distribution factor [For a member the distribution factor is
  3. Moment balancing by Moment distribution table
  4. Drawing Bending Moment diagram by super-imposition.

RSMSSB JE Civil Mock Test - 1 - Question 25

The water content of a highly organic soil is determined in an oven at a temperature of -

Detailed Solution: Question 25

Concept:

Oven drying method:

This is the most accurate and simplest method for water content determination.

In this method, the temperature to be maintained in the oven is 105° C to 110° C for 24 hours, since:

  • If the temperature is lower than 105° C to 110° C, there will be incomplete evaporation.
  • If the temperature is more than 105° C to 110° C, there will be a breaking of the crystalline structure of soil particle and loss of chemically bound structural water.
  • For highly organic soils a low temperature of about 60° C is preferable.
  • If Gypsum is present, the temperature should not be more than 80° C but for a long time.

RSMSSB JE Civil Mock Test - 1 - Question 26

As per IS soil classification system an expression for A-line is -

Detailed Solution: Question 26

As per IS soil classification:
Fine-grained soil is classified on the basis of a plastic chart. Clay is found to exist above A-line whereas silt & organic soil are found to exist below A-line.

The equation for A-line is,
IP = 0.73 (WL - 20)

Additional Information

Suffix and prefix used in soil classification:

RSMSSB JE Civil Mock Test - 1 - Question 27

One litre of sewage, when allowed to settle down for 30 minutes give sludge of 27 cm3. If the dry weight of sludge is 3.0 gm, then its sludge volume index will be -

Detailed Solution: Question 27

Concept:

Sludge Volume Index:

Sludge volume index is the volume occupied in mL by one gm of solids in the mixed liquor after settling for 30 minutes.

The recommended value of the Sludge Volume Index (SVI) for municipal sewage is approximately lying in the range of 80 to 150.

Calculation:

Given,

Volume of settled sludge = 27 cm3 = 27 ml

Drying weight of sludge = 3 gm

SVI = 9 ml/gram

RSMSSB JE Civil Mock Test - 1 - Question 28

Which one of the following statements is correct?

Detailed Solution: Question 28

Fundamental lines in a Theodolite:

Vertical axis (Azimuth axis):

  • It is the axis about which instrument rotates in the horizontal plane.

Horizontal Axis (Trunnion axis):

  • It is the axis about which instrument rotates in the vertical plane.
  • The striding level is attached to the trunnion, parallel with the horizontal axis.
  • It is advantageous to employ the striding level for the accurate adjustment of the vertical axis and measurement of the inclination of the horizontal (trunnion) axis.
  • Hence, Some theodolite are fitted with striding level which is used to test the horizontally of the trunnion axis.

Line of Collimation (Line of Sight):

  • It is the line that passes through the intersection of horizontal and vertical crosshairs and the optical center of object-glass.

Bubble Line (Level tube axis or Altitude level axis):

  • It is a straight line tangential to the longitudinal curve of the level tube at its center. It is horizontal when the bubble is center.

Plate level axis:

  • It is perpendicular to the vertical axis when the bubble is at the center.

RSMSSB JE Civil Mock Test - 1 - Question 29

GMM stands for -

Detailed Solution: Question 29

GMM (Greenwich Mean Midnight):

  • Greenwich meridian, also called prime meridian, is an imaginary line, last established in 1851.
  • That was used to indicate 0° longitude.
  • It passes through Greenwich, a borough of London, and terminates at the North and South poles.
  • Because it indicated 0° longitude, it was also known as the prime meridian.

RSMSSB JE Civil Mock Test - 1 - Question 30

The value of momentum correction factor for laminar flow through a pipe is -

Detailed Solution: Question 30

a) Momentum correction factor (β):

  • The momentum correction factor is defined as the ratio of momentum of the flow per second based on actual velocity to the momentum of the flow per second based on average velocity across a section.

For turbulent flow, the momentum correction factor is slightly higher than one near to 1.2 and

for laminar, its value is 1.33 = 4/3 --- (1)

b) Kinetic energy correction factor(α):

  • It is defined as the ratio of kinetic energy/second based on actual velocity to the kinetic energy/second based on average velocity.
  • where A = area, V= average velocity, u= local velocity at distance r.
  • For laminar flow in a circular pipe α = 2 --- (2)

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