Can you give me question paper for Assistant Engineer (Electrical) PWD organized by Tamil Nadu Public Service Commission

Here I am giving you question paper for Assistant Engineer (Electrical) PWD organized by Tamil Nadu Public Service Commission (TNPSC) in PDF file attached with it ..

14. DC series motors are best suited for traction because
. torque is proportional to the square of the armature current and speed is
proportional to the torque.
B) torque is proportional to the square of the armature current and speed is
inversely proportional to the torque.
C) torque and speed both are proportional to the square of the armature
current.
D) none of these.
15. For a d.c. series motor with saturated condition of the field circuit, the torque
developed is proportional to
AJ 12 B) I,
C) speed D) voltage.

16. The damping winding in a synchronous motor is generally used to
A) prevent hunting and provibe the starting torque
B) reduce eddy currents .
C) minimise vibrations
D] reduce noise level.

17. In a synchronous generator operating at zero pf lagging, the effect of armature
reaction is
D) both magnet- and uoss-magnetking.

18. The disadvantage of startlng an induction motor with a star-delta starter is that
AJ the starting torque is one-third of the torque in case of delta connection
B) during startlIlg high losses result
C) the starting torque tncreases and the motor runs with jerks
D) none of these.

19. The advetage of starting a slip-ring induction motor with the help of rotor
resistance as compared to other methods is that the
A) starting torque tnmeases due to rotor resistance
B) startlng current is reduced
C) starter can be built directly into the rotor
Df none of these.

Attached Files

TNPSC PWD-Electrical Question paper.pdf (699.3 KB, 166 views)