RSMSSB JE Electrical Mock Test - 2 - Electrical Engineering (EE) MCQ

Correct Answer: Brijendra Singh

Key Points

• Brijendra Singh (1929-47)
  Brijendra Singh, the last ruler of Bharatpur's Jats,
  Signed the instrument of accession to the Indian Union on July 31, 1947.

Additional Information

• Jaswant Singh (1853-93)
  • Jaswant Singh, being a minor,
  • The administration of Bharatpur was under Political Agent Morrison.
  • During the 1857 uprising, Jaswant Singh was the ruler of Bharatpur.
  • In 1879, he made a treaty with the British Government.
• Surajmal (1756-63)
  • Surajmal, son of Badan Singh,
  • Built a new fort in Bharatpur and made it his capital.
  • Followed friendship and cooperation with Jaipur.
  • Surajmal was known as the Plato (Aflatoon) of the Jats.
  • Died in 1763 in the war against the Rohillas.
• Ranjit Singh (1775-1805)
  • In September 1803, Ranjit Singh signed a treaty with British General Lord Lake.
  • In October 1804, he broke the treaty, siding with Holkar against the British.
  • The British besieged Bharatpur, but failed to capture the fort.
  • Finally, in April 1805, Ranjit Singh abandoned Holkar and made peace with the British.

The correct answer is Cwg.

Key Points

Koeppen’s Scheme – Climatic Regions of India:

The correct answer is Bhilwara.

Key Points

• The seven hundred year old Phad painting method has been handed down from generation to generation.
• Its birthplace is Rajasthan's Bhilwara.
• They are scroll paintings that tell in-depth religious tales.
• And primarily about the gods that the people who live there worship.
• On hand-woven, coarse cotton fabric that has been soaked overnight to stiffen the threads, phad paintings are produced.
• Then, rice or wheat flour starch is used to stiffen it.
• To smooth the surface and give it a gloss, it is stretched, sun-dried, then polished with a moonstone.

Additional Information

• Miniature Paintings, Gemstone Paintings, Kajali Paintings, Pichwai Paintings, Bhitti Chitra Paintings, and Bani Thani Paintings are other famous painting styles of Rajasthan.

The correct answer is Dr. Mohammad Hadi.

Key Points

• In 1931, the Mev peasant movement of Rajasthan started under the leadership of Dr. Mohammad Hadi.
• It took place in the region of Alwar and Bharatpur which is also called the Mewat region.
• Headed by Mohammad Ali.

Additional Information

• Alwar Maharaja Jaisingh
  • Sir Jai Singh Prabhakar GCSI GCIE (14 June 1882 – 19 May 1937), was the Maharaja of the princely state of Alwar from 1892 to 1937.
  • The only son of the previous ruler, Sir Mangal Singh Prabhakar Bahadur, Sir Jai Singh initially was noted as brilliant, erudite, and charming.
  • However, he was later forced into exile.
  • He died in 1937 at the age of 54.
  • He was succeeded by a distant relative, Tej Singh Prabhakar Bahadur.
• Pratap Singh
  • Pratap Singh I, popularly known as Maharana Pratap, was a Hindu Rajput king of Mewar.
  • He was titled "Mewari Rana" and was notable for his military resistance against the expansionism of the Mughal Empire and is known for his participation in the Battle of Haldighati and the Battle of Dewair.

The correct answer is Gokul Bhai Bhatt.

Key Points

• Gokulbhai Daulatram Bhatt:
  • He was a freedom fighter and a social worker from the Rajasthan state in India.
  • He is known as Gandhi of Rajasthan.

Important Points

• Gokulbhai Daulatram Bhatt came in contact with Mahatma Gandhi after getting elected as a delegate to the Ahmedabad Congress of 1921.
• Till 1939, he remained at Gandhi Ashram in Mumbai, and after that, shifted to Sirohi in Rajasthan to organize people for the freedom movement.
• He also served as a member of the Congress Working Committee and the president of the Rajasthan Pradesh Congress Committee.
• Gokulbhai Daulatram Bhatt was awarded the Padma Bhushan award in 1971 and the Jamnalal Bajaj Award for Constructive Work in 1982.

Additional Information

• ​​Manikya Lal Verma
  • He was a pioneer leader of the historic "Bijoliya Movement".
  • He received Padma Bhushan in 1965.
  • He was then Prime Minister of Mewar Riyasat (Prior to the formation of Rajasthan State).
  • Manikya Lal Verma Tribal Research and Training Institute is situated in Udaipur of Rajasthan state.
• Arjun Lal Sethi
  • He was a famous freedom fighter, revolutionary, and educator from Jaipur.
  • He has sometimes been termed the father of the freedom movement in Rajasthan.
  • He founded the first National Vidyapeeth Jain Vardhaman Vidyalaya of India in Jaipur to teach the lesson of revolution and independence.
  • He made a lot of efforts for Hindu-Muslim unity.​
• ​Vijay Singh Pathik
  • Vijay Singh Pathik, popularly known as Rashtriya Pathik, was an Indian revolutionary.
  • His real name was Bhup Singh Gurjar.
  • He was among the first Indian revolutionaries who lit the torch of the freedom movement against British rule.
  • Much before Mohandas K. Gandhi initiated the Satyagrah movement, Pathik experimented during the Bijolia’s Kisan agitation.

The correct answer is Amber Jaipur of Painting.

Key Points

• Dhundhar School of Painting:
  • Dhundhar is a historical region of Rajasthan state in western India. It includes the districts of Jaipur, Sawai Madhopur and Tonk.
  • Under the banner of Dhundar Pradesh, there are Amber, Jaipur, Alwar and Shekhawati styles of paintings.
  • The Dhundar school of paintings was much popular for its exclusive folk art paintings.

• Dhundhar School of Painting

Additional Information

• Kishangarh School of Painting:
  • Kishangarh painting is the part of Rajasthani Marwar School of painting that emerged in the 18th Century. Kishangarh which is located in the northwestern part of Rajasthan became one of the abodes of art and culture during king Sawant Singh who himself was an expert in creating poetries and paintings. He was a devotee of Lord Krishna. carried in his heart the love for ‘Bani Thani’, a maid or a singer in his stepmother’s household.
  • He started worshipping her as Radha.
  • He called himself the servant of Radha or ‘Nagridas’ which was his pen name.
  • The Kishangarh painting mainly focuses on depicting the romantic life of Radha and Krishna which was deeply influenced by Jaydev’s famous work ‘Geet Govinda.
  • Other subject matters were: hunting scenes, court scenes, portraits of kings, nawabs, Nayak Nayika Veda etc.
  • Depiction of women is one of the chief attractions of this gharana.No other Rajasthani paintings had shown women so beautifully. Female figures have been painted with sharp features with long eyes curved upward in the shape of ‘Khanjan Pakshi’.
  • Colours were most prominent. There was no mixing of colours.
  • The panoramic landscapes were drawn skillfully to narrate the stories.
  • The most important painting: ‘Bani Thani’ was painted by the court artist Nihalchand in 1760 CE and has now been preserved in the National Museum, New Delhi.
• Hadoti School of Painting:​
  • ​The Bundi or Hadoti School of Paint began under Rao Chattar Sal who was appointed as the Governor of Delhi by Shah Jahan.
  • It is a region of Rajasthan state in western India and the country of Hada Rajputs, which comprises the territories of two states, Bundi and Kota.
  • The Bundi artists had their depiction of feminine beauty.
  • A typical Bundi-Kota miniature has graceful women with round faces, lotus petal eyes, sharp eyebrows and well-formed bodies.
  • The human figures were put in the backdrop of plants and evergreen forests along with animals like elephants, lions, tigers and wild boars
  • Under the patronage of Raja Ummed Singh, the class of Indian paintings known as the ‘Ragamala’ and ‘Baramasa’ paintings emerged and these paintings depict the moods and sentiments of men and women, time of the day, seasons and ‘ragas’ and ‘raginis’ associated with the seasons.
• Jodhpur School of Painting:
  • The Jodhpur paintings are popularly known as the Marwar paintings developed in the royal Rajput families of Rajasthan which includes the Kishangarh, Bikaner, Jodhpur, Nagaur, Pali and Ghanerao schools of painting collectively.

The correct answer is Jilani Mata - Jasol (Barmer).

Key Points

• Jilani Mata Temple:
  • Jilani Mata is considered as Lokdevi of the Alwar region.
  • Jilani Mata temple is located at Behror in Alwar.
    Every year, two fairs are organised here on the premises of the temple.
  • The ancient name of Alwar is Salva. It was a part of the Matsya Kingdom, one of the 16 ancient Mahājanapadas.
  • Alwar was designated as part of the National Capital Region, resulting in additional development projects including rapid-rail to Delhi and drinking water improvements.
  • The military cantonment of Itarana lies on the outskirts of Alwar.
  • The Sariska Tiger Reserve, a National Park and Tiger Reserve, is located in the Aravali hills only a few kilometers away from Alwar.

The correct answer is Pashupatinath.

Key Points

• Pashupatinath is not included in the five temples of the Dilwara group of temples.
• Dilwara Temples were built between the 11th and 13th centuries AD by the Chalukya dynasty.
• It is located just 2.5 km from Mount Abu, Rajasthan.

Important Points

• Dilwara Temple Complex consists of five different temples, each devoted to five Jain Tirthankaras(saints). These are-
  • Shri Mahaveer Swami Temple
    • This Jain temple is devoted to Lord Mahaveer the 24th Tirthankara of Jain.
    • It was built in 1582.
    • This is a small temple relative to other Jain temples.
    • Its walls have marvelous work of craftsmanship of Sirohi painted pictures of the porch.
    • The work was done in 1764.
  • Shri AdiNath Temple or Vimal Vasahi Temple
    • This is the oldest temple among all other temples in the complex and is dedicated to the first Jain Tirthankara Shri Adinath Ji.
    • It was built by Vimal Shah, Minister of Solanika ruler of Gujarat in 1031 A.D.
    • Inside the temple, there are small images of Jain saints which have exclusive works of minute art carved on marble.
    • Outside of the temple, there is an open courtyard surrounded by corridors all beautifully decorated with marble carved stones.
    • “Guda Mandapa” which is a hall decorated with numerous images of Shri Adi Nath, is another attraction in this temple.
  • Shri ParshavNath Temple or Khartar Vasahi Temple
    • It has the tallest shrine among all Dilwara temples.
    • With four big Mandapa’s the temple is constructed by the Mandinka clan between 1458-59 A.D.
    • This temple also has marvelous carvings on the marble pillars.
  • Shri Rishabdaoji Temple or Peethalhar Temple
    • It was built by Bhima Shah, a minister from the Gujarat dynasty.
    • This temple is known as Pittalhari/Peethalhar temple because ‘Pittal’ (Brass Metal) is used in the construction of most statues in this temple.
    • It also has Gudu Mandapa and Navchowki.
  • Shri Nemi Nath Ji Temple or Luna Vasahi Temple
    • This temple is dedicated to the 22nd saint of Jainism – Shri Nemi Nathji.
    • It was constructed by two brothers known as Tejpal and Vastupal in 1230 A.D.

The correct answer is Vijay Singh Pathik.

Key Points

• Vijay Singh Pathik-
  • His original name was Bhoop Singh.
  • He established Rajasthan Seva Sangh in 1919 AD.
  • He published Rajasthan Kesari and Navin Rajasthan newspapers.
  • He was also associated with the Bijoliya peasant movement and gave leadership to this movement.
  • 'What are the Indian states' book was written by him.

Additional Information

• Kantichand Chauthani was associated with Kishangarh Prajamandal.
• Laduram Vyas was associated with Shahpura Prajamandal.
• Abhinn Hari was associated with Kota Prajamandal.
• Chandanmal Bahad hoisted the tricolor flag with the help of Gopaldas on Dharmstupa in Churu on 26 January 1930 AD.

The correct answer is Phulwari ki Nal - Rajsamand.

Key Points

• Phulwari ki Nal Wildlife Sanctuary is in the Udaipur District of Rajasthan, in the southern Aravalli Hills bordering the state of Gujarat, India.
• It was declared a Wildlife Sanctuary on 6 October 1983 by the Government of Rajasthan.

Additional Information

The correct answer is Maharaja Takhat Singh.

Key Points

• Maharaja Thakat Singh was the ruler of Jodhpur during the revolt of 1857.
• He was born on 6th June 1819 in Ahmednagar.
• He was succeeded by his eldest son Jaswant Singh II.
• He was also the final Maharaja of Ahmednagar from 1841 to 1843.

Important Points

• Jodhpur is a city located in the Indian state of Rajasthan.
• It was founded in 1459 by Rao Jodha.
• The city is also called "Blue City".
• Earlier it was the capital of "Kingdom of Marwar".

The correct answer is Chauhans.

Key Points

• The Chauhan inscription from Bijolia is also known as the Bijolia inscription (1170 AD).
• The text in this inscription is in the Sanskrit language.
• Bijolia inscription is engraved on a large rock to the north of a water reservoir attached to the Parshvanath temple at the Bijolia temple complex.
• It was recorded that the construction was a shrine to Tirthankar Parshvanath by a Digambar Jain named Lolak.
• Detailed Chauhan rulers of the Shakambari and Ajmer list is seen in the Bijolia inscription.​

Additional Information

• Other Important inscriptions in Rajasthan.
• Achaleshwar Inscription - 1285 AD.
  • According to the 1274 CE Chittor inscription and 1285 1285 AD Achaleshwar (Abu) inscription of Vedasharma, Bappa Rawal "changed his priestly splendor for regal luster".
  • The Atpur inscription describes Guhadatta as a "Mahideva", which according to historian R. V. Somani, can be translated as either "king" or "Brahmin.​
• ​Chirwa Inscription - 1273 AD
  • ​It has been inscribed in 1273 AD at the door of the temple of Udaipur revealing the achievements of Bappa Rawal's ancestors.
  • It describes the social and religious conditions of the age.
• Kumbhalgarh Prashasti - 1460 AD
  • It is the most important source of knowing the ancestry of Mewar kings.​

The correct answer is Daughters wedding farewell song.

Key Points

• Olyun is sung by the women of the family to lighten the mood while bidding farewell to the daughter.
• Some folk songs of Rajasthan:
  • ​Ghoomar.
  • Bhavai Dance.
  • Kalbelia.
  • Chari or Pot Dance.
  • Dandiya.
  • Kachhi Ghodi.
  • Terah Taal.
  • Gair.

Additional Information

• About Rajasthan (as of June 2022)
  • CM: Ashok Gehlot
  • Governor: Kalraj Mishra
  • State flower: Rohira (Tecomella undulata)
  • State Animal: Chinkara
  • National Parks and Wildlife Sanctuaries: Ranthambore National Park, Sariska Tiger Reserve (Native wildlife & tiger sanctuary), Desert National Park, Mount Abu WS.
  • Highest Peak: Guru Sikhar (1732 mt)
  • Important river: Chambal and Luni (Inland river)
  • UNESCO site: Chittorgarh Fort, Kumbhalgarh, Ranthambore Fort, Amber Fort.

The correct answer is Jodhpur-Barmer.

Important Points

• These dunes occur in Phalodi, Jodhpur and Shergarh tehsils of Jodhpur district and also in the western parts of Jaisalmer and Barmer districts.
• Sand dunes formed as long elongated ridges oriented at right angles to the wind directions known as Transverse dunes.
• It forms long lines of ridged dunes that are perpendicular to the wind direction.
• They have steep slip faces at the back sides of the ridges.
• These wavy dunes form in areas with plenty of sand and not much plant life.
• The sand dunes found behind beaches are often transverse dunes formed by strong ocean winds.

The correct answer is Maharao Ummed Singh I.

Key Points

• Maharao Ummed Singh I was the patron of the Kota School of Painting.
• The Kota school of painting is one of the finest examples of this technique.
• Kota paintings are known for their depiction of nature and hunting scenes.

Additional Information

• The Kota school of painting:
  • It is renowned for the portrayal of battles, hunting expeditions, marriages, and other major political events.
• Mewar school of painting:
  • It included Nathdwara, Devgarh, and Shahpura sub-styles.
• Marwar school of painting:
  • It included Kishangarh, Bikaner, Jodhpur, Nagaur, Pali, and Ghanerao styles.
• Hadoti school of painting:
  • It included Kota, Bundi, and Jhalawar styles.
• Dhundar school of painting:
  • It included Amber, Jaipur, Shekhawati, and Uniara styles.

Due to the magnetic locking between stator and rotor poles synchronous motor is not self-starting and there is no starting device to accelerate the rotor to near synchronous speed.

By using the following methods we can start a synchronous motor.

Using Pony Motors: The pony motor drives the main motor up to near synchronous speed. The motor then needs to be synchronised to the supply. The DC excitation is then switched on, the rotor field and stator fields than "lock-in" and the pony motor is disconnected. The main motor then runs at synchronous speed.

Using Damper Winding: When the 3 phase supply is switched on, the motor runs up as a normal squirrel cage induction motor.

Using Small D.C machine coupled to it: A small DC machine is coupled with the synchronous motor. The DC machine is made to act as a DC motor so that the synchronous motor is started.

Dielectric loss:

• The losses that occur in insulating materials i.e. in the transformer oil and solid insulation of the transformer are known as dielectric losses.
• This loss occurs in solid insulation of HV transformers and is very small so that we can neglect these losses.
• It occurs when the insulating materials and the oil losses its quality.
• Periodic testing of oil and maintaining the insulating quality on effective way to reduce dielectric loss.

Stray load loss:

• Stray losses are due to the leakage flux in the transformer.
• This leakage flux induces eddy current that appears all over in metal parts which are under the magnetic leakage field called stray loss.
• We can neglect these losses, as the percentage of these losses is very less as compared to iron and copper losses.
• Stray losses can be reduced by minimizing the leakage flux

Core loss:

• Core loss (Iron loss) in transformers is the combination of hysteresis loss and eddy current loss.
• This type of loss mainly occurs in the magnetic core of the transformer, and depends on the magnetic properties of core material.
• Both Eddy current loss and hysteresis loss depend upon the magnetic property of the core material, frequency of supply (f) and maximum flux density (B_m)
• Core loss = Hysteresis loss + Eddy current loss
• Choosing proper core material which has low hysteresis coefficient and high permeability can minimize hysteresis loss.
• Eddy current loss can be reduced by using on iron core made of thin laminated sheets and material with high electrical resistivity. It reduces the induced EMF and the amount of current flow.

Ohmic loss:

• Ohmic loss (or copper loss) occurs due to the ohmic resistance in both primary and secondary winding.
• Total copper loss in transformer = primary winding copper loss + secondary winding copper loss
• Total copper loss
• It is clear from the above equation that the copper loss varies with the amount of current (square times) through the windings.

Superposition Theorem:

• The superposition theorem states that "in a linear circuit with several sources, the current and voltage for any element in the circuit is the sum of the currents and voltages produced by each source acting independently."
• The superposition theorem applies only when all the components of the circuit are linear, which is the case for resistors, capacitors, and inductors it is not applicable to networks containing nonlinear elements.

Important Point

Various Theorem and the circuits where they are applicable is shown below in the table:

Observation:

• From the I-V characteristics curve above voltage across the diode in the breakdown, the region is almost constant.
• In the breakdown region, it can be used as a voltage regulator application.

Magnetic susceptibility:

Magnetic susceptibility is a dimensionless proportionality constant that indicates the degree of magnetization of a material in response to an applied magnetic field.

Magnetic susceptibility (X) of a material is the ratio of magnetization I (magnetic moment per unit volume) to the applied magnetizing field intensity H.
X = I/H

Table shows the susceptibility of different material

Note:

Magnetic permeability:

• The ratio of the magnetic induction (B) to the magnetic intensity (H) is defined as magnetic permeability.
• Magnetic permeability is usually defined by the Greek letter μ (Italicized).
• This is the degree of magnetization produced by a material in response to an applied magnetic field
• The formula of magnetic permeability is given by: μ = B/H

Magnetic reluctivity: The reciprocal permeability of magnets is called magnetic reluctivity.

The intensity of Magnetisation: The moment of the magnetic dipole formed per unit volume when a magnetic material undergoes the magnetization field is called the intensity of magnetization.

Inductor:

• It is a passive device, also called a coil, choke, or reactor.

• It is two terminal device that stores energy in a magnetic field when an electric current passes through it.
• It opposes the change of current.
• Hence, initially at t = 0, inductor will act as open circuit → at t = 0, frequency ω = ∞ ⇒ X_L = ωL = ∞ = open circuit. So there is no current flows through the circuit. ⇒ I = 0
• Now, the magnetic field energy of an inductor is given by W
  initially at t = 0, so I = 0, therefore W = 0
• Power delivered to the inductor by battery-
  P = V.I
  at t = 0, I = 0
  ⇒ P = 0

• Emf induced, since current is changing with respect to time in inductor hence the emf induced in inductor is non zero.
• So, option 3 is correct.

Stator earth fault protection of Alternator

• The star point or neutral point of stator winding of Alternator is grounded through an impedance to limit the ground fault current.
• Reduced ground fault current causes less damage to the stator core and winding during ground or earth fault.
• If the ground impedance is made quite high, the ground fault current may become even less than normal rated current of generator.
• Relaying arrangement for stator earth fault protection of alternator depends upon the method of Stator neutral earthing.
• In case of resistance neutral earthing the neutral point of stator winding is connected to the ground through a resistor.
• It should be noted that, 100% of stator winding cannot be protected in resistance neutral earthing system.
• The maximum allowable fault current is determined by the size of the transformer and the value of loading resistance.
• The value of resistance necessary in the neutral circuit to prevent an overvoltage due to resonance is
• This resistance is connected with the secondary, reflects to the primary of the transformer by the square of the twins ratio, thereby adding resistance to the neutral to ground path of the stator winding.

Unijunction Transistor:

A unijunction transistor (UJT) is a three-lead electronic semiconductor device with only one junction that acts exclusively as an electrically controlled switch.

The symbol of a UJT is:

The characteristic of a UJT is:

From the UJT characteristics, the negative resistance region lies between the peak & valley points.

Single-phase full-bridge inverter:

The circuit diagram of a single-phase full-bridge inverter is shown below.

Response (or) Output waveforms for various types of load:

RLC Underdamped: ζ < 1

Where  for RLC circuit

To turn OFF the switches S₁, S₂ at T/2, the anode current should come to zero. Due to this type of load, it is possible as the current becomes zero before the voltage becomes zero.

Therefore, the forced commutation is not required for this kind of load to make the anode current zero

In this case, a leading current will flow in the circuit and it will become zero. So, the thyristor will be load commutated.

Load commutation occurs due to an underdamped response.

RLC Overdamped: ζ > 1
Where  for RLC circuit

To turn OFF the switches S₁, S₂ at T/2, the anode current should come to zero. Due to this type of load, it is possible as the current becomes zero after the voltage becomes zero.

Therefore, the forced commutation is required for this kind of load to make the anode current zero.

The load commutation will not occur due to an overdamped system. So, forced commutation is required.

Mason's Gain Formula is used to evaluate an overall transmittance (gain), which can be expressed as,

Where

Gk = Forward path transmittance of kth path

Δ = Graph determinant comprising closed-loop transmittances & mutual interactions between non-touching loops.

Concept:

• The rotation in anticlockwise position from the reference point is taken as positive.
• The rotation in clockwise position from the reference point is taken as negative.

Explanation:

From the above phasor, V₂ leads V₁ by 40°

Biased Differential Relay:

• The relay whose operation depends on the phase difference of two or more electrical quantities is known as the differential protection relay.
• It works on the principle of comparison between the phase angle and the magnitude of the same electrical quantities.
• In a biased differential relay, the bias is defined as a ratio of the number of turns of restraining and operating coil.

​​Operation of biased differential relay:

The MMF produced in the operating coil = N_o(I₁ - I₂)

The MMF produced in the restraining coil =

At balance condition:

= No(I1 - I2)

Bias = =

Eddy Current Loss:

• When an alternating magnetic field is applied to a magnetic material, an emf is induced in the material itself according to Faraday’s Law of Electromagnetic induction.
• Since the magnetic material is a conducting material, this EMF circulates current within the body of the material.
• These circulating currents are called Eddy Currents. They will occur when the conductor experiences a changing magnetic field.
• As these currents are not responsible for doing any useful work, and it produces a loss (I²R loss) in the magnetic material known as an Eddy Current Loss.

Mathematical Expression for Eddy Current Loss:

The eddy current power loss in a magnetic material is given by the equation shown below:
watts
where,
K_e – co-efficient of eddy current. Its value depends upon the nature of magnetic material
B_m – maximum value of flux density in Wb/m²
t – thickness of lamination in meters
f – frequency of reversal of the magnetic field in Hz
V – The volume of magnetic material in m³

From eddy current loss equation we can write

P_e ∝

B_m ∝ (V / f)

P_e ∝ V²

The eddy current loss at constant voltage is independent of transformer frequency

The ratio of eddy current loss at 60 Hz to 50 Hz at constant voltage is 1:1

The insulation resistance of a cable is,

Insulation resistance is inversely proportional to length.