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Frame relay provides error detection at the ______
B. data link layer
B. data link layer
See lessFrame Relay networks offer an option called _______
D. voice over frame relay
D. voice over frame relay
See lessThe measure to improve the transient stability of the power system during the unbalanced or unsymmetrical fault can be taken as ________
a Explanation: Single pole switching of CB allows the immediate isolation of the fault frim the system and thus safeguarding the healthy part.
a
See lessExplanation: Single pole switching of CB allows the immediate isolation of the fault frim
the system and thus safeguarding the healthy part.
If there are two machines having moment of inertia M1 and M2, where M1<M2; The possible number of equivalent moment of inertia will be _______________
c Explanation: M1+M2, M1||M2 and M1-M2.
c
See lessExplanation: M1+M2, M1||M2 and M1-M2.
As per the system given, machine B will receive the active and reactive power from machine A when ______________
a Explanation: Real power flows from higher to lower δ while the reactive power flows from higher voltage to lowe
a
See lessExplanation: Real power flows from higher to lower δ while the reactive power flows from
higher voltage to lowe
There is 2-machine model having losses too, with their transfer impedance being resistive. The maximum value of sending power P1max and maximum receiving end power P2max will take place with power angle ‘δ’ such that
a Explanation: Even after connecting parallel machines, their maximum power will occur at load angle lesser than 90 degrees.
a
See lessExplanation: Even after connecting parallel machines, their maximum power will occur at
load angle lesser than 90 degrees.
How can we improve the steady state stability of the synchronous generator for a better performance?
a Explanation: P(max) = EV/X.
a
See lessExplanation: P(max) = EV/X.
Post a three phase fault that occurs in a system, then its transient stability can be examined using _________
a Explanation: Swing equation provides the rotor dynamics at the transient conditions
a
See lessExplanation: Swing equation provides the rotor dynamics at the transient conditions
The transient instabilities can occur in a system by ___________
d Explanation: All the mentioned factors affect the transient stability of a system
d
See lessExplanation: All the mentioned factors affect the transient stability of a system
The transient stability and the steady state stability of a power transmission system ________
a Explanation: Transient stability and steady state stability maintain synchronism between the generating station and tie line
a
See lessExplanation: Transient stability and steady state stability maintain synchronism between
the generating station and tie line