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AE-JE Foundation EE : Electrical Machines Quiz -2
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Question 1
Which three-phase connection can be used in a transformer to introduce a phase difference of 30o between its output and corresponding input line voltages?
Question 2
In a three-phase delta-connected balanced load
Question 3
The following connection of three single phase transformer bank results in
Question 4
The main application of delta/zig-zag connected 3-phase transformer is to supply
Question 5
When a V-V three phase transformer system is converted into a ∆-∆ system, increase in capacity of the system ¡s
Question 6
The zero-sequence circuit of the three phase transformer shown in the figure
Question 7
Three single-phase transformers are connected to form a 3-phase transformer bank. The transformers are connected in the following manner:
The transformer connection will be represented by
The transformer connection will be represented by
Question 8
In a three-phase transformer, the current flowing in three primaries produces three corresponding fluxes. The sum of these three fluxes at any instant is
Question 9
A three phase star/delta transformer is used to step down voltage. If the primary voltage and secondary current are 11 KV and 423 A respectively. Turns ratio of transformer is 5, then the output KVA is
Question 10
Which of the following connections in a three-phase transformer is called open-delta connection?
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AE & JE ExamsJul 20AE & JE Exams