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Wednesday, March 11, 2026
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Tuesday, March 3, 2026
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Saturday, November 22, 2025
POLYTECHNIC 10 DAYS LIFE SKILL PROGRAM
роЗроЩ்роХே роЙроЩ்роХро│ுроХ்роХு родрооிро┤ிро▓் рооொро┤ிрокெропро░்рок்рокு:
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родрооிро┤்роиாроЯு родொро┤ிро▓்роиுроЯ்рок роХро▓்ро╡ி роЗропроХ்роХроХроо் (DOTE) "роЙрогро░்роЪ்роЪி роиுрог்рогро▒ிро╡ு (EQ) рооூро▓роо் ро╡ாро┤்роХ்роХைрод் родிро▒рой் рооேроо்рокாроЯு" роОрой்ро▒ родро▓ைрок்рокிро▓் роЗро░рог்роЯு ро╡ாро░ роХிро░ெроЯிроЯ் родிроЯ்роЯрод்родை рокро▓்ро▓ிроЯроХ்роХро▓்ро▓ூро░ி рооாрогро╡ро░்роХро│ுроХ்роХாроХ роЕро▒ிрооுроХрок்рокроЯுрод்родிропுро│்ро│родு. роЗрои்род рооுропро▒்роЪி, рооாрогро╡ро░்роХро│ிрой் роОродிро░்роХாро▓род்родை ро╡роЯிро╡рооைрок்рокродро▒்роХாроХ, роЕро╡ро░்роХро│ுроЯைроп роЙрогро░்роЪ்роЪி роиுрог்рогро▒ிро╡ு (EQ) ро╡ро│ро░்роЪ்роЪிропிро▓் роХро╡ройроо் роЪெро▓ுрод்родுроХிро▒родு. роЗродு роЕро▒ிро╡ு, родிро▒рой், роЕрогுроХுрооுро▒ை роЖроХிроп рооூрой்ро▒ைропுроо் роЗрогைроХ்роХுроо் родிро▒рой்роЙрог்роЯாроХ்роХுроо் рокропிро▒்роЪிроХро│ைропுроо், роХுрогроиро▓рой் роЙро░ுро╡ாроХ்роХுроо் рокропிро▒்роЪிроХро│ைропுроо் роЙро│்ро│роЯроХ்роХிропродாроХுроо். роЗрои்род родிроЯ்роЯрод்родிрой் роиோроХ்роХроо், роЖро┤рооாрой родிро▒рооை, роЙро▒ுродிропாрой рооройрок்рокாроЩ்роХு, роироо்рокிроХ்роХைропாрой роХுрогроиро▓рой்роХро│ுроЯрой் роХூроЯிроп родிро▒рооைропாрой роЗро│ைроЮро░்роХро│ை роЙро░ுро╡ாроХ்роХுро╡родாроХுроо்.
роЗрои்род роЕрооро░்ро╡ு роЪாродாро░рог родроХро╡ро▓் рокроХிро░்ро╡ு роЕро▓்ро▓родு ро╡ро┤роХ்роХрооாрой роЙро│்рооுройைрок்рокுрок் рокேроЪ்роЪு роЕро▓்ро▓. роЗродு роТро░ு ро╡ாро┤்роХ்роХைрод் родிро▒рой் роХро▒்ро▒ро▓் роЕройுрокро╡рооாроХுроо். роЗрои்род рокропிро▒்роЪி роЕройைрод்родுрок் родேро░்рои்родெроЯுроХ்роХрок்рокроЯ்роЯ рооாрогро╡ро░்роХро│ைропுроо் роЗрогைропрод்родிрой் рооூро▓роо் роЗрогைрод்родு, роХро░ுрод்родு роХро▒்ро▒ро▓், роЖро┤рооாрой роЪுроп роЪிрои்родройை, роЙро│்ро│ாро░்рои்род ро╡ிро┤ிрок்рокு рокропிро▒்роЪிроХро│், ро╡ро┤ிроХாроЯ்роЯрок்рокроЯ்роЯ роХுро┤ு ро╡ிро╡ாродроЩ்роХро│், роиிроЬ ро╡ாро┤்роХ்роХைрок் рокропрой்рокாроЯ்роЯு роЪெропро▓்рокாроЯுроХро│், рокிро░родிрокро▓ிрок்рокு роиோроЯ்роЯெро┤ுродро▓், рооро▒்ро▒ுроо் роХுро▒ிрок்рокிроЯ்роЯ ро╡ீроЯ்роЯுрок்рокрогி рокோрой்ро▒ро╡ро▒்ро▒ை роЙро│்ро│роЯроХ்роХிропродாроХ роЗро░ுроХ்роХுроо். роЖроХро╡ே, роЕройைрод்родு рокроЩ்роХேро▒்рокாро│ро░்роХро│ிроЯрооுроо் рооிроХுрои்род рокொро▒ுрок்рокுрогро░்ро╡ு рооро▒்ро▒ுроо் роЪெропро▓்родிро▒рой் роОродிро░்рокாро░்роХ்роХрок்рокроЯுроХிро▒родு; роЗродройாро▓் роЗрогைроп ро╡ро┤ி рокропிро▒்роЪி рооேро▓ுроо் рокропройுро│்ро│родாроХ роЗро░ுроХ்роХுроо்.
роЗрои்род родிроЯ்роЯрод்родிро▓் роЗро░рог்роЯு роородிрок்рокீроЯ்роЯு роХூро▒ுроХро│் роЙро│்ро│рой:
1. роХро▒்ро▒ро▓் роТро┤ுроХ்роХ роородிрок்рокீроЯு (Learning Discipline Assessment – LDA)
2. роХро░ுрод்родு mastery роородிрок்рокீроЯு (Concept Mastery Assessment – CMA)
роЗро░рог்роЯுроХ்роХுроо் роЪроорооாрой рооுроХ்роХிропрод்родுро╡роо் ро╡ро┤роЩ்роХрок்рокроЯ்роЯுро│்ро│родு, роПройெройிро▓் роТрой்ро▒ிрой்ро▒ி рооро▒்ро▒ொрой்ро▒ு рооுро┤ுрооைропாроХ роЪெропро▓்рокроЯ рооுроЯிропாродு. ро╡роХுрок்рокро▒ை роироЯрод்родை роородிрок்рокீроЯ்роЯிро▒்роХு (LDA) роиாроо் ро╡ро┤роЩ்роХுроо் рооுроХ்роХிропрод்родுро╡роо், рооாрогро╡ро░்роХро│ிрой் роХро░ுрод்родு mastery (CMA) роЪெропро▓்родிро▒ройைрод் родாройாроХро╡ே рооேроо்рокроЯுрод்родுроо்.
роЗроЩ்роХே родрооிро┤ிро▓் рооொро┤ிрокெропро░்рок்рокு:
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родேро░்роЪ்роЪி рокெро▒்ро▒ роЗро▒ுродி роЖрог்роЯு рооாрогро╡ро░்роХро│ுроХ்роХாрой рооேро▓ுроо் роТро░ு роХுро┤ு 24.11.2025 рооுродро▓் 05.12.2025 ро╡ро░ை родிроЯ்роЯрооிроЯрок்рокроЯ்роЯுро│்ро│родு. рооாрогро╡ро░்роХро│் рооро▒்ро▒ுроо் роКро┤ிропро░்роХро│் роХாро▓ை 8:30 роорогிроХ்роХு роЪро░ிропாроХ роЪேро░்рои்родுроХொро│்ро│ ро╡ேрог்роЯுроо். роЕрооро░்ро╡ு рооாро▓ை 6:00 роорогிроХ்роХு рооுроЯிропுроо். рооீродрооுро│்ро│ рооாрогро╡ро░்роХро│ுроХ்роХாрой роХுро┤ுроХ்роХро│் рокிрой்ройро░் роЕро▒ிро╡ிроХ்роХрок்рокроЯுроо்.
рокропிро▒்роЪி рооро▒்ро▒ுроо் роородிрок்рокீроЯ்роЯு рокொро░ுроЯ்роХро│் FTP рооூро▓роо் роЕройுрок்рокрок்рокроЯுроо். роХро▒்ро▒ро▓் рокொро░ுроЯ்роХро│ை роЕроЪ்роЪிроЯுро╡родро▒்роХாрой роТро░ு рооாрогро╡ро░் родро▓ா ро░ூ.50 роХроЯ்роЯрогроо் родொро┤ிро▓்роиுроЯ்рокроХ் роХро▓்ро╡ி роЗропроХ்роХроХроо் (DOTE) роПро▒்роХுроо்.
роЗродройை рооுрой்ройிроЯ்роЯு, рооாрогро╡ро░்роХро│ுроХ்роХு роОродிро░்роХாро▓род்родிро▓் роЪிро▒рои்родு ро╡ிро│роЩ்роХ родேро╡ைропாрой родிро▒рой்роХро│ைропுроо் рооройрок்рокாроЩ்роХைропுроо் ро╡ро┤роЩ்роХுроо் ро╡ிродрооாроХ, родிроЯ்роЯрооிроЯро▓், роЪெропро▓்рокроЯுрод்родро▓் рооро▒்ро▒ுроо் рокூро░рог рокроЩ்роХேро▒்рокிро▓் родроЩ்роХро│ிрой் рооுро┤ு роТрод்родுро┤ைрок்рокைропுроо் ро╡ро┤роЩ்роХுрооாро▒ு рооுродро▓்ро╡ро░்роХро│ிроЯроо் роЕрой்рокுроЯрой் роХேроЯ்роЯுроХ்роХொро│்роХிро▒ோроо்.
Monday, November 17, 2025
ECE MOBILE COMMUNICATION DOTE NEW QUESTION BANK ANSWERS KEY
ECE MOBILE COMMUNICATION DOTE NEW QUESTION BANK ANSWERS KEY
ENGLISH ANSWERS DOWNLOAD PDF
TAMIL ANSWERS DOWNLOAD PDF
Tuesday, November 11, 2025
1030234110 - Electrical Machines – II STUDY MATERIALS
1030234110 - Electrical Machines – II
20 MARKS MODEL MCQ TEST LINK CLICK TO ATTEND TEST
PART A
1. Which of the
following is an advantage of the rotating field in alternators?
a) It reduces the mechanical
wear on the rotor
b) It simplifies the construction of the stator
c) It allows for higher power factor operation
d) It eliminates the need for excitation
- The frequency of generated
EMF in an alternator depends on:
a) Speed and number of poles
b) Armature current
c) Field current
d) Load
- In alternators, the rotating
part is usually the:
a) Field system
b) Armature
c) Core
d) Commutator
- What is the primary
difference between single-layer and double-layer windings in alternators?
a) Single-layer windings have more turns per coil
b) Double-layer windings are more efficient in reducing harmonics
c) Single-layer windings are used for high-speed alternators
d) Double-layer windings are more compact but less efficient
- What is the primary cause of
a change in terminal voltage of an alternator under varying load
conditions?
a) Variation in armature current
b) Change in synchronous reactance
c) Effect of armature reaction
d) External voltage fluctuations
- Which of the following
methods is used to determine the voltage regulation of an alternator by
the indirect method?
a) Direct load test
b) EMF method
c) Parallel operation
d) Synchronizing method
- In the context of
alternators, what is the meaning of the term Infinite Bus Bar?
a) A power source with unlimited capacity for load sharing
b) A system where alternators share the load equally
c) A theoretical concept where the voltage remains constant regardless of load changes
d) A device that helps synchronizes multiple generators automatically
- Which method is used to
synchronize alternators based on the lamp brightness variation?
a) Dark Lamp Method
b) Bright Lamp Method
c) Dark-Bright Lamp Method
d) Synchroscope Method
- The working principle of
induction motor is based on:
a) Electromagnetic induction
b) Mutual induction
c) Faraday’s law
d) Self-induction
- The speed of an induction
motor is given by:
a) Ns(1–s)
b) Ns(1+s)
c) Ns/s
d) Ns/s²
- What is the characteristic
behavior of the slip-torque curve in an induction motor?
a) The torque increases linearly with slip
b) The torque decreases with increasing slip
c) There is a maximum torque at a certain slip value, beyond which the torque decreases
d) The torque remains constant regardless of the slip
- What is the purpose of the
auto transformer starter for an induction motor?
a) To provide a higher starting torque
b) To reduce the starting current by providing reduced voltage
c) To synchronize the motor with the power supply
d) To prevent cogging and crawling
- The starting torque of a
single-phase induction motor is:
a) Zero
b) Maximum
c) Equal to running torque
d) Constant
- Capacitor start motors are
used for:
a) High starting torque
b) Low cost
c) Low starting torque
d) Speed regulation
- In a shaded pole motor,
shading coil produces:
a) Rotating magnetic field
b) Constant field
c) Alternating field
d) Zero torque
- Repulsion motor works on the
principle of:
a) Induction
b) Repulsion between currents
c) Electromagnetic attraction
d) Magnetic repulsion
- In a synchronous motor, the
speed is:
a) Constant
b) Variable
c) Depends on load
d) Proportional to voltage
- Hunting in synchronous motor
is caused by:
a) Sudden load changes
b) Constant load
c) Voltage drop
d) Excitation fault
- A synchronous condenser is
used for:
a) Power factor correction
b) Voltage regulation
c) Speed control
d) Load balancing
- Damper windings in a
synchronous motor are used to:
a) Prevent hunting
b) Reduce torque
c) Increase current
d) Increase speed
Monday, November 10, 2025
EEE - 1030234210 - GENERATION TRANSMISSION AND DISTRIBUTION
TO ATTEND 20 MARKS MCQ TEST CLICK HERE
1030234210 - GENERATION TRANSMISSION AND DISTRIBUTION
PART – A ( ONE MARKS )
1. The
primary fuel used in thermal power stations is:
a) Coal
b) Diesel
c) Natural gas
d) Biomass
2. What
does the Plant Use Factor represent in power plants?
a) The ratio of the actual
energy produced to the total energy that could have been produced
b) The ratio of the total capacity of the plant to the actual energy produced
c) The amount of energy lost in transmission
d) The efficiency of converting fuel into electricity
3. Hydroelectric
power plants convert:
a) Potential energy to
electrical energy
b) Thermal to mechanical
c) Solar to thermal
d) Mechanical to potential
4. What
is the primary advantage of a Grid or Interconnected System in power
generation?
a) It increases the overall cost of electricity generation
b) It allows for sharing of
power among different plants, improving reliability
c) It makes the transmission lines more vulnerable to failure
d) It reduces the efficiency of power plants
5. In
a transmission line, the skin effect is prominent at:
a) High frequency
b) Low voltage
c) DC supply
d) Short length
6. Corona
loss in transmission lines increases with:
a) Increased voltage
b) Decreased humidity
c) Smooth conductors
d) Low frequency
7. Transmission
efficiency is maximum when:
a) Sending end power = Receiving end power
b) Voltage drop is zero
c) Losses are maximum
d) Power factor is zero
8. The
sag in a transmission line primarily depends on:
a) Conductor material
b) Transmission voltage
c) Tension in the conductor and
the span length
d) Frequency of the transmitted signal
9. Which
of the following is a key advantage of HVDC transmission over AC transmission?
a) Higher efficiency at long
distances
b) Reduced need for synchronization between grids
c) Simple construction
d) Lower installation cost
10. In HVDC
transmission, what does the bipolar configuration refer to?
a) A single DC line with a ground return
b) Two DC lines with opposite
polarities
c) Multiple AC lines connected to one DC link
d) A single converter station with both AC and DC outputs
11. What is the
primary function of a STATCOM (Static Synchronous Compensator) in FACTS
systems?
a) To increase the system voltage
b) To reduce harmonic distortion
c) To provide reactive power
compensation
d) To convert AC to DC power
12. Which of
the following FACTS controllers is capable of controlling both reactive power
and active power flow?
a) SVS
b) STATCOM
c) UPFC
d) SVC
13. Which of
the following is a common material used for manufacturing line insulators?
a) Steel
b) Rubber
c) Porcelain
d) Copper
14. The string
efficiency of suspension insulator strings can be improved by:
a) Increasing the number of insulators
b) Using longer insulator strings
c) Grading the insulators
d) Increasing the voltage rating of the insulators
15. Which of
the following is a characteristic of screened cables?
a) Insulation is made of paper only
b) Conductors are completely
enclosed in a metallic screen
c) The cable is primarily used for low voltage applications
d) It does not require any outer sheath for protection
16. In a
three-core underground cable, the cores are typically arranged:
a) In parallel to each other with a common sheath
b) In a triangular arrangement
with an individual sheath for each core
c) In a coaxial arrangement
d) In a straight line with no individual sheath
17. Which of
the following is the primary advantage of underground distribution systems over
overhead systems?
a) Lower initial cost
b) Greater safety and
aesthetics
c) Higher transmission efficiency
d) Easier to maintain and repair
18. In an AC
distribution system, which of the following is not a common type of connection
scheme?
a) Radial system
b) Ring main system
c) Interconnected system
d) Star-delta system
19. Which type
of substation typically has all its equipment installed inside a building?
a) Outdoor substation
b) Gas-insulated substation (GIS)
c) Indoor substation
d) Hybrid substation
20. Which of
the following is a primary function of a bus bar in a substation?
a) To step up or step down the voltage
b) To provide electrical isolation
c) To connect multiple circuits
together for power distribution
d) To filter harmonics in the power system
Saturday, November 8, 2025
1030233210 - ELECTRICAL CIRCUIT THEORY - STUDY MATERIALS
1030233210 - ELECTRICAL CIRCUIT THEORY - STUDY MATERIALS
MODEL QUESTION PAPER - MCQ
TO ATTEND MCQ TEST CLICK HERE
PART – A ( ONE MARKS )
1. The
SI unit of resistance is
a) Ohm
b) Farad
c) Henry
d) Watt
2. Ohm’s
law states that
a) V ∝
I
b) V = I/R
c) I = R/V
d) I = VR
3. The
power dissipated in a resistor is
a) R2I
b) IR
c) I²R
d) V²R
4. The
total resistance of three resistors connected in series is
a) R₁R₂R₃
b) R₁
+ R₂ + R₃
c) 1/R₁ + 1/R₂ + 1/R₃
d) (R₁R₂)/(R₁
+ R₂)
5. Thevenin’s
theorem is applicable only to
a) Linear networks
b) Nonlinear networks
c) AC networks only
d) DC networks only
6. Norton’s
equivalent circuit consists of
a) Voltage source in parallel with Thevenin’s resistance
b) Current source in parallel
with Thevenin’s resistance
c) Voltage source in series with Thevenin’s resistance
d) Inductor in series with resistor
7. In
superposition theorem, all other sources are replaced by
a) Open circuit for voltage, short circuit for current
b) Short circuit for voltage,
open circuit for current
c) Both shorted
d) Both opened
8. Maximum
power transfer occurs when load resistance equals
a) Source resistance
b) Half of source resistance
c) Twice source resistance
d) Zero
9. The
average value of a pure sine wave is
a) 0.707 × Vmax
b) 0.637 × Vmax
c) 1.11 × Vmax
d) Vmax
10. The RMS
value of a sine wave is
a) 0.707 × Vmax
b) 0.5 × Vmax
c) 1.11 × Vmax
d) 0.637 × Vmax
11. In a pure
inductive circuit, current
a) Lags voltage by 90°
b) Leads voltage by 90°
c) Is in phase
d) Is opposite in phase
12. Power
factor of a purely resistive circuit is
a) 0
b) 0.5
c) 1
d) 0.707
13. Resonance
occurs when
a) XL = XC
b) XL > XC
c) XC > XL
d) R = XL
14. The unit of
conductance is:
a) Ohm
b) mho
c) Henry
d) Farad
15. The
Q-factor of a coil is the ratio of
a) Resistance to reactance
b) Reactance to resistance
c) Voltage to current
d) Power to frequency
16. In a two
branch parallel circuit, the total admittance is equal to the:
a) difference of branch admittances
b) reciprocal of branch admittances
c) sum of branch admittances
d) ratio of branch admittances
17. In a
delta-connected system:
a) the line voltage is equal to the phase voltage
b) the phase voltage is equal to the line voltage
c) the line voltage is √3 times
the phase voltage
d) the phase voltage is √3 times the line voltage
18. The phase
sequence in a three-phase system determines:
a) The magnitude of the phase voltages
b) The direction of rotation of
motors
c) The line current
d) The efficiency of power transmission
19. In a
balanced three-phase load, when the power factor is unity, the two-wattmeter
method will result in:
a) Both wattmeters showing the
same value
b) One wattmeter showing zero and the other showing the total power
c) Both wattmeters showing zero
d) Both wattmeters showing different values
20. Symmetrical
components are primarily used to:
a) Simplify the analysis of
unbalanced systems
b) Measure the total power in a system
c) Analyze balanced systems
d) Measure the impedance of the system
Ece CE MCQ
https://docs.google.com/forms/d/e/1FAIpQLSf9QIElKnuVE0C-KY3pWAzjZZ7jBgWPF1FIlyyskBhGR4W2pw/viewform Test link
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