Dipanjan Kulkarni

EduRev CAT

Dipanjan Kulkarni
EduRev CAT
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Electrical Engineering (EE)
Discussed Questions
Abhay Khanna asked   •  14 hours ago

Which river is central to recent discussions about resource management and development between India and Bangladesh?
  • a)
    Yamuna River
  • b)
    Ganges River
  • c)
    Teesta River
  • d)
    Brahmaputra River
Correct answer is option 'C'. Can you explain this answer?

The Teesta River is central to discussions about resource management and development between India and Bangladesh. Its significance lies in its role as a vital water resource for both nations, impacting irrigation and hydroelectric projects. Collaborations on the river's management are crucial for ensuring sustainable water usage and addressing regional water scarcity issues.

In a certain code LAWN is written as JCUP. How will SLIT be coded in that code?
  • a)
    QNGV                      
  • b)
    QJGV 
  • c)
    QNVG                  
  • d)
    NJGV            
Correct answer is option 'A'. Can you explain this answer?

Abhay Khanna answered  •  Feb 13, 2025
Understanding the Code
To decode how LAWN is translated to JCUP, we need to analyze the letter shifts in the alphabet.
Step-by-Step Analysis
- L to J:
- L (12) → J (10) = -2 shift
- A to C:
- A (1) → C (3) = +2 shift
- W to U:
- W (23) → U (21) = -2 shift
- N to P:
- N (14) → P (16) = +2 shift
... more
Abhay Khanna upvoted   •  Jan 25, 2025

What is the minimum clearance of HV Lines from ground across streets?
  • a)
    3.1 meters
  • b)
    8.1 meters
  • c)
    6.1 meters
  • d)
    5.1 meters
Correct answer is option 'C'. Can you explain this answer?

EduRev GATE answered
According to IE rule 77,
No conductor of an overhead line, including service lines, erected across a street shall at any part thereof be at a height less than -
(a) For low and medium voltage lines - 5.8 metres
(b) For high voltage lines - 6.1 metres

If the potential V = 10/r2 sinθcosϕ then the work done in moving a 10 μC charge from point A(1, 30°, 120°) to B(4, 90°, 60°) would be equal to
  • a)
    16.65 μJ
  • b)
    28.125μJ
  • c)
    25,25 μJ
  • d)
    30.625 μJ
Correct answer is option 'B'. Can you explain this answer?

Abhay Khanna answered  •  Dec 31, 2024
Understanding the Potential
The potential given is V = 10/(r^2 sin(θ) cos(φ)). Here, r is the radial distance, θ is the polar angle, and φ is the azimuthal angle.
Coordinates Conversion
To solve the problem, convert the spherical coordinates A(1, 30°, 120°) and B(4, 90°, 60°) into Cartesian coordinates.
- For Point A:
- r = 1, θ = 30°, φ = 120°
- x_A =
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Abhay Khanna asked   •  Nov 27, 2024

What is the primary purpose of the Major Atmospheric Cherenkov Experiment (MACE) telescope?
  • a)
    To study terrestrial weather patterns
  • b)
    To detect high-energy gamma rays for cosmic phenomena research
  • c)
    To monitor air pollution levels
  • d)
    To explore the surface of the moon
Correct answer is option 'B'. Can you explain this answer?

Crafty Classes answered
The correct answer is Option B, "To detect high-energy gamma rays for cosmic phenomena research." MACE is specifically designed to observe gamma rays exceeding 20 giga-electron volts, contributing to our understanding of cosmic events and aiding in dark matter research. This capability enhances our knowledge of the universe and supports the field of multi-messenger astronomy, which combines data from different astronomical sources to provide a more comprehensive view of cosmic phenomena.

A capacitor used for power factor correction in single phase circuit decreases:
  • a)
    the line current and increases power factor
  • b)
    both line current and power factor
  • c)
    line current
  • d)
    power factor
Correct answer is option 'A'. Can you explain this answer?

Abhay Khanna answered  •  Nov 13, 2024
Understanding Power Factor Correction
Power factor correction is an essential technique used in electrical systems to enhance efficiency. In a single-phase circuit, capacitors are commonly employed for this purpose.
Function of Capacitors in Power Factor Correction
- Capacitors provide reactive power, which can counteract the inductive effects in a circuit.
- The
... more
Abhay Khanna asked   •  Sep 29, 2024

Why are the East China Sea and South China Sea considered strategically significant for China?
  • a)
    They contain the largest population of fish in the world
  • b)
    They are rich in untapped natural resources
  • c)
    They are essential for international trade routes
  • d)
    They provide a buffer against military threats
Correct answer is option 'D'. Can you explain this answer?

Sushil Kumar answered
The East China Sea and South China Sea are strategically significant for China primarily because they serve as a buffer against external threats, forming part of China's "first island chain" defense strategy. This positioning allows China to project military power in the region while safeguarding its national security interests. Additionally, these seas are crucial for trade and resource access, underscoring their importance in both defense and economic contexts. An additional fact is that control over these waters impacts not only regional stability but also global trade dynamics.

In a factory there are three types of bulbs L1, L2 and L3 which produces 20%, 15% and 32% of the total products respectively. L1, L2 and L3 produces 3%, 7% and 2% defective products, respectively. Find the percentage of non-defective products ?
  • a)
    46%
  • b)
    30%
  • c)
    53%
  • d)
    64%
Correct answer is option 'D'. Can you explain this answer?

Abhay Khanna answered  •  Sep 28, 2024
Understanding the Problem
In this factory, we have three types of bulbs: L1, L2, and L3. Each type contributes differently to the total production, and they also have varying rates of defective products. Our goal is to determine the percentage of non-defective products.
Production Contribution
- L1: 20% of total products
- L2: 15% of total product
... more

The Snell law is applicable for perpendicular polarisation and the Brewster law is applicable for parallel polarisation. State True/False.
  • a)
    True
  • b)
    False
Correct answer is option 'A'. Can you explain this answer?

Abhay Khanna answered  •  Aug 11, 2024
Explanation:

Snell's Law:
- Snell's Law states the relationship between the angles of incidence and refraction when light passes from one medium to another.
- It is applicable for perpendicular polarisation, where the electric field of the incident wave is perpendicular to the plane of incidence.

Brewster's Law:
- Brewster's Law states that
... more

A rectangular loop of length a = 1 meter and width b = 80 cm is placed in a uniform magnetic field. What is the maximum value of induced emf if the magnetic flux density B - 0.1 Wb/m2 is constant and the loop rotates about the x-axis with a frequency of 50 Hz?
  • a)
    32.65 volts
  • b)
    18.54 volts
  • c)
    28 volts
  • d)
    25.13 volts
Correct answer is option 'D'. Can you explain this answer?

Abhay Khanna answered  •  Jul 13, 2024
Given data:
- Length of the loop (a) = 1 meter
- Width of the loop (b) = 80 cm = 0.8 meters
- Magnetic flux density (B) = 0.1 Wb/m^2
- Frequency of rotation (f) = 50 Hz

Calculating the maximum induced emf:
- The maximum induced emf (ε) can be calculated using the formula:
ε = B * A * ω * sin(θ)
where A is the area of the loop and θ is the
... more

 A resistance of 7 ohm is connected in series with an inductance of 31.8mH. The circuit is connected to a 100V 50Hz sinusoidal supply. Calculate the phase difference.
  • a)
    -55.1
  • b)
    55.1
  • c)
    66.1
  • d)
    -66.1
Correct answer is option 'A'. Can you explain this answer?

Abhay Khanna answered  •  May 15, 2024
Impedance Calculation
- Calculate the impedance of the inductor using the formula: XL = 2πfL
- XL = 2 * π * 50 * 31.8mH ≈ 10 ohm
- Total impedance (Z) = √(R^2 + XL^2)
- Z = √(7^2 + 10^2) ≈ 12.21 ohm

Phase Difference Calculation
- Calculate the phase angle using the formula: φ = arctan(XL/R)
- φ = arctan(10/7) ≈ 55.1 degrees
- Since the re
... more

Which equipment provides fluctuating loads ?
  • a)
    lathe machines
  • b)
    exhaust fan
  • c)
    welding transformers
  • d)
    all of the above
Correct answer is option 'C'. Can you explain this answer?

Abhay Khanna answered  •  May 15, 2024
Welding Transformers
Fluctuating loads are loads that vary in intensity over time. In the case of equipment that provides fluctuating loads, welding transformers are a prime example.

Explanation:

What are welding transformers?
Welding transformers are devices that convert high voltage, low current electricity into low voltage, high current elect
... more

Directions: In this type of questions, some particular words are assigned certain substituted names. Then a question is asked that is to be answered in the substituted code language.
If 'cushion' is called 'pillow', 'pillow' is called 'mat', 'mat' is called 'bedsheet' and 'bedsheet' is called 'cover', which will be spread on the floor ?
  • a)
    Cover
  • b)
    Bedsheet
  • c)
    Mat
  • d)
    Pillow
  • e)
    None of these
Correct answer is option 'B'. Can you explain this answer?

Abhay Khanna answered  •  Apr 21, 2024
Explanation:

Given Information:
- Cushion is called pillow
- Pillow is called mat
- Mat is called bedsheet
- Bedsheet is called cover

Identifying the correct option:
- We need to find out what will be spread on the floor according to the given substitutions.
- According to the substitutions:
- Pillow is called mat
... more

If the intrinsic angle is 20, then find the loss tangent.
  • a)
    tan 20
  • b)
    tan 40
  • c)
    tan 60
  • d)
    tan 80
Correct answer is option 'B'. Can you explain this answer?

Abhay Khanna answered  •  Apr 03, 2024
Explanation:
Intrinsic angle is the angle at which the dielectric material absorbs energy and is given by the formula:
Loss tangent = tan(intrinsic angle)
Given intrinsic angle = 20 degrees

Calculation:
Loss tangent = tan(20)
Loss tangent = 0.364
Therefore, the loss tangent for an intrinsic angle of 20 degrees is 0.364, which corresponds to op
... more
Abhay Khanna asked   •  Nov 04, 2023

Full load current of an Induction motor is 20 Ampere. The no-load current may be expected to be
  • a)
    25 Ampere to 28 Ampere
  • b)
    15 Ampere to 18 Ampere
  • c)
    11 Ampere to 14 Ampere
  • d)
    6 Ampere to 10 Ampere
Correct answer is option 'D'. Can you explain this answer?

Vibhor Goyal answered
Induction motor on no-load:
Circuit diagram for induction motor on no-load:
Where,
V1 is the applied voltage
I1 is the no-load current
Ic is the working component of current through Rc (Magnetizing resistance)
Im  is the magnetizing component of current through Xm (magnetizing reactance)
  • The current drawn by the induction motor when it is not coupled to the driven equipment is called the no-load current of the motor.
  • The no-load current produces the magnetic field in the motor.
  • No-load current is 30 to 50 % of the full load current of the induction machine
Therefore when the full load current is 20 A, then the no-load current is 6 to 10 A
Important Points
There are two parts of no-load current.
  1. Magnetizing component of the current
  2. Loss components( Hysteresis and eddy current loss)​
Phasor Diagram when Induction motor on no load:
Where,
E1 is the stator induced EMF
V1 is the stator terminal voltage
E2 is the rotor induced EMF
The power factor of the machine is poor when operating at no-load

Abhay Khanna asked   •  Oct 20, 2023

In an experiment, positive and negative values are equally likely to occur. The probability of obtaining at most one negative value in five trials is
  • a)
    1/32
  • b)
    2/32
  • c)
    3/32
  • d)
    6/32
Correct answer is option 'D'. Can you explain this answer?

Crack Gate answered
Concept:
Since both the positive and negative values are likely to occur, the negative values are binomially distributed
Binomial distribution:
 If a random variable X has binomial distribution as B (n, p) with n and p as parameters, then the probability of random variable is given as:
Where,
n is the number of observations, k is the number of success
p is the probability of success & (1 - p) is the probability of failure.
Calculation:
Given:
n = 5, p = 1/2
Let X represents number of negative values in 5 trials
At most 1 negative value means, k can be 0 and 1
P(At most one negative value) = P(X≤1)
P(X ≤ 1) = P(X = 0) + P(X = 1)
Important Points
  • At most mean maximum. This term usually used when there are multiple trials like tossing a coin, throwing a dice
  • For example in tossing two coins
  • At most two head means it can be two head or one head or no head

Abhay Khanna asked   •  Sep 03, 2023

Consider the following statements:
1. Metal conductors have more R(resistance) at higher temperatures.
2. Tungsten can be used as a resistance wire.
3. A superconductive material is one that has practically zero resistance.
Which of the above statements are correct?
  • a)
    1 and 2 only
  • b)
    1 and 3 only
  • c)
    2 and 3 only
  • d)
    1, 2 and 3
Correct answer is option 'D'. Can you explain this answer?

Anjana Singh answered
The characteristics of material like resistivity and conductivity vary according to the temperature.
Where, p0 is the resistivity of metal conductor at T = 0K
Observations:
  • In a metal conductor, the resistivity of material increases when temperature increases, and since the resistance is directly proportional to the resistivity, the resistance of the material is also increased.
  • Also, metals have a positive temperature coefficient, So for a higher value of temperature, resistance will be higher. So statement 1 is correct.
  • At the critical temperature, the resistivity of the superconductor increased drastically and below the critical temperature resistivity is zero. So it’s resistance will also zero. So statement 3 is correct.
  • Tungsten can be used as a resistance wire because it has high resistance, but also allows the flow of current to produce heating effect. So Statement 2 is also Correct.

Abhay Khanna asked   •  Aug 21, 2023

How is an array initialized in C language?
  • a)
    int a[3] = {1, 2, 3};
  • b)
    int a = {1, 2, 3};
  • c)
    int a[] = new int[3]
  • d)
    int a(3) = [1, 2, 3];
Correct answer is option 'A'. Can you explain this answer?

Anjana Singh answered
In C language, an array can be initialized by providing a comma-separated list of values enclosed in braces ({}) after the declaration.
In option A, the array a is declared as an integer array of size 3 using the syntax int a[3]. The values 1, 2, and 3 are then provided within the braces to initialize the elements of the array.
Option B, int a = {1, 2, 3}, is incorrect because it tries to initialize a single integer variable a with multiple values, which is not valid. Array initialization requires the use of square brackets [] to declare an array.
Option C, int a[] = new int[3], is not valid C syntax. The new keyword is not used in C language for array initialization.
Option D, int a(3) = [1, 2, 3], is also incorrect syntax. The parentheses () and the use of square brackets [] are used incorrectly. Proper array initialization requires the use of square brackets [] and braces {}.
Therefore, the correct answer is A) int a[3] = {1, 2, 3}; as it demonstrates the correct syntax for initializing an array in C.

Abhay Khanna asked   •  Aug 16, 2023

Can I get a GATE EE Exam result verification certificate for official use?

Vaibhav Joshi answered
Introduction
Yes, you can obtain a GATE EE Exam result verification certificate for official use. This certificate serves as a proof of your GATE Exam score and can be used for various purposes such as job applications, higher education admissions, or government-related requirements. Here's how you can obtain the certificate and its significance.

Process of Obtaining GATE
... more
To obtain a GATE EE Exam result verification certificate, you need to follow these steps:

1. Visit the official GATE website: Go to the official website of GATE (Graduate Aptitude Test in Engineering) which is conducted by the Indian Institute of Technology (IIT).

2. Log in to your account: Log in to your GATE account using your registered email address and password. If you do not have an account, you will need to create one by providing the necessary details.

3. Access the scorecard section: Once you log in, navigate to the scorecard section or the certificate section on the website. Look for an option that allows you to generate or download the result verification certificate.

4. Provide necessary details: Fill in the required information such as your GATE registration number, examination year, and other relevant details as requested.

5. Generate the certificate: After submitting the required information, the website will generate your GATE EE Exam result verification certificate. You can then download and save it for official use.

Significance of GATE EE Exam Result Verification Certificate
The GATE EE Exam result verification certificate holds significant importance for the following reasons:

1. Authenticity: The certificate serves as an authentic proof of your GATE Exam score, verifying that you have successfully appeared for the exam and obtained a specific score.

2. Official use: It can be used for official purposes such as job applications, higher education admissions, or any other situation where your GATE score needs to be verified.

3. Government requirements: In some cases, government organizations or institutions may require a GATE score verification for specific purposes. The result verification certificate fulfills this requirement.

4. Credibility: The certificate adds credibility to your academic profile and enhances your chances of getting selected for various opportunities.

5. Easy access: By providing a simple online process, the GATE authorities make it convenient for candidates to obtain their result verification certificates whenever required.

Conclusion
Obtaining a GATE EE Exam result verification certificate for official use is a straightforward process. By visiting the official GATE website, logging into your account, and following the necessary steps, you can generate and download the certificate. This certificate holds significant importance for job applications, higher education admissions, and government-related requirements, providing an authentic and credible proof of your GATE Exam score.

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