Vikram Sarabhai Space Centre Technician Electrician Paper 2019

VSSC Technician Exam 2023 will be conducted on 20th Aug 2023 for the post Technician. If you are the  aspirants of the said exam, then you must read this question paper for your practice.

The distribution transformer is a
(a) Step up transformer
(b) Step down transforer
(c) Current transformer
(d) None of the above

The turns ratio of a step up transformer is 10. If the input supply frequency is 50 Hz, what is the output supply freqency?
(a) 500 Hz
(b) 5 Hz
(c) 50 Hz
(d) None of the above

In oil filled transformer, oil is used as
(a) Cooling agent
(b) Insulating agent
(c) Vibration isolator
(d) None of the above

The silica gel breather is used in transformer for
(a) Preventing moisture absorption
(b) Preventing fire
(c) Preventing heating
(d) All the above

The turns ratiio of a distribution transformer is 100. If the current in primary is 100A, what is the current in secondary?
(a) 100A
(b) 1A
(c) 1000A
(d) None of the above

Star-Delta starter in three phase induction motor is used mainly to
(a) Reduce the starting speed
(b) Reduce the starting torque
(c) Reduce the starting current
(d) None of the above

The pole pitch of a 10 pole motor is 2. Find the number of slots
(a) 10
(b) 20
(c) 5
(d) None of these

Total electrical degrees of a 4 pole motor is
(a) 720 degree
(b) 320 degree
(c) 180 degree
(d) 1440 degree

Domestic ceilling fan is an example of
(a) Single phase induction motor
(b) Two phase inductor motor
(c) DC motor
(d) Brushless DC motor

Commutator is used in
(a) Single phase induction motor
(b) Three phase induction motor
(c) DC motor
(d) Brush less DC motor