GATE EE 2006 | GATE EE Year Wise Previous Years Questions

GATE EE 2006

MCQ (Single Correct Answer)

-0.67

Three identical star connected resistors of $$1.0$$ $$p.u$$ are connected to an unbalanced $$3$$ phase supply. The load neutral is isolated. The symmetrical components of the line voltages in $$p.u.$$ calculations are with the respective base values, the phase to neutral sequence voltages are

$${V_{an1}} = X\angle \left( {{\theta _1} + {{30}^0}} \right),\,\,{V_{an2}} = Y\angle \left( {{\theta _2} - {{30}^0}} \right)$$

$${V_{an1}} = X\angle \left( {{\theta _1} - {{30}^0}} \right),\,\,{V_{an2}} = Y\angle \left( {{\theta _2} + {{30}^0}} \right)$$

$${V_{an1}} = {1 \over {\sqrt 3 }}X\angle \left( {{\theta _1} - {{30}^0}} \right),\,\,{V_{an2}} = {1 \over {\sqrt 3 }}Y\angle \left( {{\theta _2} - {{30}^0}} \right)$$

$${V_{an1}} = {1 \over {\sqrt 3 }}X\angle \left( {{\theta _1} - {{60}^0}} \right),\,\,{V_{an2}} = {1 \over {\sqrt 3 }}Y\angle \left( {{\theta _2} - {{60}^0}} \right)$$

GATE EE 2006

MCQ (Single Correct Answer)

-0.3

Keeping in view the cost and overall effectiveness, the following circuit breaker is best suited for capacitor bank switching

vacuum

air blast

SF₆

oil

GATE EE 2006

MCQ (Single Correct Answer)

-0.3

In a biased differential relay the bias is defined as a ratio of

Number of turns of restraining and operating coil

Operating coil current and restraining coil current

Fault current and operating coil current

Fault current and restraining coil current

GATE EE 2006

MCQ (Single Correct Answer)

-0.6

The Gauss Seidel load flow method has following disadvantages. Tick the incorrect student.

Unreliable convergence

Slow convergence

Choice of slack bus effects convergence

A good initial guess for voltages is essential for convergence

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