# A power system network with the capacity at 100MVAhas a source impedance at 10% at a Point. The fault at that point is

1.  10MVA

2.  30 MVA

3.  3000MVA

4.  1000 MWA

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Explanation :
No Explanation available for this question

# The impulse response of linear time invariant system is given as g(t)=et,t>0 The transfer function of the system is equal to

1.  1/s

2.  1/s(s+1)

3.  1/s+1

4.  s/s+1

4

1/s+1

Explanation :
No Explanation available for this question

# The open-loop transfer function of a unity feedback control system is given by G(s)=Ke-Ts where K and T are variables and are greater than zero. The stability of the closed-loop system depends on

1.  K only

2.  Both K and T

3.  T only

4.  Neither K nor T

4

Both K and T

Explanation :
No Explanation available for this question

# Four identical alternators each rated for 20 MVA, 11kV having a subtransient reactance of 16% are working in parallel. The short-circuit level at the bus bars is

1.  500 MVA

2.  400 MVA

3.  125 MVA

4.  80 MVA

4

500 MVA

Explanation :
No Explanation available for this question

# Which one of the following polar plots corresponds to G(jω)=1/(jω)2(1+jωT)

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# A phase lead compensating network consists of only capacitors and resistors. The locations of its pole and zero in s-plane are at Pc and Zc respectively. Which of the following conditions must be satisfied

1.  Both Pc and Zc in LHS and Pc

2.  Both Pc and Zc in LHS and Pc>Zc

3.  Pc is in LHS and Zc can be in RHS

4.  Zc is in LHS and Pc can be RHS

4

Both Pc and Zc in LHS and Pc>Zc

Explanation :
No Explanation available for this question

# The following sequence currents were recorded in a power system under a fault condition : Ipositive=j 1.653 p.u. Inegative =-j0.5 P.u Izero = -j 1.153 p.u. The fault is

1.  line to ground

2.  three phase

3.  line to line ground

4.   line to line

4

line to line ground

Explanation :
No Explanation available for this question

# For a given unity feedback system with G(s)=k(s+3)/s(s+1)(s+2)(s+5) what is the real axis intercept for root locus asymptotes

1.  2/3

2.  1/4

3.  -5/3

4.  -3/2

4

-5/3

Explanation :
No Explanation available for this question

# The open loop transfer function of a unity negative feedback control system is given by G(s)=k/(s+2)(s+4)(s2+6s+25) what is the value of k which causes sustained oscillation in the closed loop system

1.  590

2.  666.25

3.  990

4.  1190

4

666.25

Explanation :
No Explanation available for this question

1.  √2 VkV

2.  √3VkV 1

3.  3V kV

4.  1/√3 VkV

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