If the percentage impedances of the two transformers working in parallel are different, then

A transformers will be overheated
B power factors of both the transformers will be same
C parallel operation will be not possible
D parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common load

Correct Answer: parallel operation will still be possible, but the power factors at which the two transformers operate will be different from the power factor of the common load

Bissoy MCQ
#Electrical Engineering #Transformers

Related Questions

Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in
A short-circuiting of the secondaries
B power factor of one of the transformers is leading while that of the other lagging
C transformers having higher copper losses will have negligible core losses
D loading of the transformers not in proportion to their kVA ratings
Two men and women are entrusted with a task. The second man needs three hours more to cope up with the job than the second man and the woman would need working together. The first man, working alone, would need as much time as second man and the woman working together. The first man working alone, would spend eight hours less than the double period of the time second man would spend working alone. How much time would the two men and the women need to complete the task if they all asked together?
A 1 hour
B 2 hours
C 3 hours
D 4 hours
E 5 hours
What will happen if the transformers working in parallel are not connected with regard to polarity?
A The power factor of the two trans-formers will be different from the power factor of common load
B Incorrect polarity will result in dead short circuit
C The transformers will not share load in proportion to their kVA ratings
D Cannot be determined
Two transformers operating in parallel will share the load depending upon their
A leakage reactance
B per unit impedance
C efficiencies
D ratings
A balanced load is one in which all the impedances are equal.
A True
B False
Why transformers connected in parallel should have same voltage ratio?
A To avoid full load circulating current
B To avoid no-load circulating current
C To avoid other losses
D To avoid all type of currents
For the parallel operation of single phase transformers it is necessary that they should have
A same efficiency
B same polarity
C same kVA rating
D same number of turns on the secondary side.
Two people were hired to plough a field for a total of Tk. 498 . They completed the job with one person working for 1.75 hours and the other working for 0.875 hours. If they split the Tk. 498 in proportion to the amount of time each spent working on the job, how much will person who worked longer receive?
A Tk 166
B Tk. 249
C Tk. 312
D Tk. 332
Two people were hired to clear a lawn for total of Tk450. They completed the job with one person working for 1 hour 20 minutes and the other working for 40 minutes. If they split the wage in proportion to the amount of time each spent working on the job, how much did the person who worked longer receive?
A Tk.225
B Tk.300
C TK. 250
D Tk.275
Rony and Jony are working on an assignment. Rony takes 6 hours to type 32 page on a computer, while Jony takes 5 hours to type 40 pages. How much time will they take, working together on two different computers to type an assignment of 110 pages?
A 7 hr 30 min
B 8 hr
C 8hr 15 min
D 8 hr 25 min

Next steps