WIREMAN EXAM QUESTIONS

WIREMAN EXAM QUESTIONS-MCQ

 Wireman Recruitment Examination Questions of Multiple Choice for your Exam Preperation

1. In case a PN junction is  biased-
a) Hole and electrons seize to move
b) Electrons and holes mov towards the junction
c) Electrons and holes move away from the junction
d) Depletion region decreases

2. Winding generator will have-
a) Wave wound
b) Delta wound
c) Lap wound
d) Duplex wound

3. The element that has the biggest size in a transistor is
a) Collector
c) Emitter
b) Base
d) Collector-base-junction

4. Which of the following generators have two field windings?
a) Series wound generator
b) Compound wound generator
c) Shunt wound generator
d) All of these

5. A series motor-
a) Should always be started on load
b) Always runs at constant speed
c) Is not suitable for high starting torque
d) May 'run away' if the field gets opened

6. In a separately excited D.C generator the field is connected to-
a) In series with an armature
b) To the external supply source
c) Across the armature
d) None of these

7. The direction of rotation of 3 phase induction motor can be reversed by-
a) Reducing load
c) Supplying low voltage
b) Reducing frequency
d) Interchanging any two phases

8. The direction of rotation of a compound dc motor can be effectively reversed by interchanging-
a) Shunt field connections
b) Armature connection
c) Series field connections
d) Line leads

9. Slip ring induction motors are employed only for-
a) Speed control
c) Both (a) and (b)
b) High starting torque
d) None of these

10. MCCB are commonly used for operating current between-
a) 63 amps. To 800 amps
b) 16 amps. To 32 amps
c) 5 amps. To 16 amps
d) None of these