Time Left - 12:00 mins
JE 2019 || Day 22 || Synchronous Machines Quiz 1
Attempt now to get your rank among 820 students!
Question 1
If a 3 phase alternator is short circuited at its terminal, then the initial value of short circuit current will be limited by ________.
Question 2
Alternators are classified into _________.
Question 3
The synchronous motor runs on ____
Question 4
Hydrogen is used in large alternators mainly to
Question 5
Alternators are usually designed to generate which type of a.c. voltage?
Question 6
A-4 pole, 75 kW, Y-connected, 50 Hz, 440 V synchronous motor operates at rated condition with 0.8 p.f. leading. The motor efficiency excluding field and stator losses is 95% and , what is the power angle?
Question 7
A 208 V, 45 kVA, 0.8 p.f. leading, connected, 60 Hz synchronous motor has a synchronous reactance of and negligible armature resistance. Its friction and windage losses are 1.5 kW and its core losses are 1 kW. Initially, the shaft is supplying a 15 h.p. load and the motors p.f. is 0.8 leading. The magnitude and phase angle of armature current is
Question 8
_____is an unexcited single phase synchronous motor.
Question 9
For V-curves for a synchronous motor the graph is drawn between:
Question 10
Which of the following condition is NOT mandatory for alternators working in parallel?
- 820 attempts
- 2 upvotes
- 11 comments
Tags :
ESE & GATE EEGeneralApr 22ESE & GATE EE