For measuring positive, negative and zero sequence voltages in a system, the reference is taken as :

Related MCQs

• In a 3-phase system,the harmonic has negative phase sequence of RBY.
• The positive and negative halves of a complex wave are symmetrical when
• The positive sequency component of voltage at the point of fault is zero when it is a :
• The trigonometric Fourier series for a complex wave will contain positive cosine terms only when
• The principal information obtained from load flow studies in a power system are 1. magnitude and phase angle of the voltage at each bus. 2. reactive and real power flows in each of lines. 3. total power loss in the network. 4. Transient stability limit of the system Select the correct answer from the codes given below :
• The total power taken by the load remains constant so that _____ will be higher
• In case of a 3-phase short circuit is a system, the power fed into the system is :
• A lightning arrestor connected between the line and earth in a power system
• Consider the following statements : The transient stability of the power system under unbalanced fault conditions can be effectively improved by 1. Excitation control 2. phase-shifting transformer 3. single-pole switching of circuit breakers 4. increasing the turbine input. Of these statements
• The Transients in the power system occurs for