Question

.
1.
a) Draw the circuit diagram using BIS symbols to run the AC single phase capacitor
start, induction run motor and change its direction of rotation, also measure the
current.
(59)
b) List out the required tools. meters, machine raw materials and write the sequence
procedure steps to perform the above task.
c) Connect run the single phase capacitor start, induction run motor and measure the
running curren, also reverse its direction of rotation,
2.
a) Draw the power and control circuits of an automatic star delta using 3 contactors
over load relay with timer using BIS symbol to run 3 phase squirrel cage induction
motor.
(100)
b) List out the required tools, components, (Contractors, relay, timer etc), materials and
write the procedure to assemble automatic star delta starter.
c) Assemble the 3 phase automatic star delta starter using 3 contactors, OLR, timer etc
and test the same by running the 3 phase squirrel cage induction motor.
3.
a) Draw the schematic connection circuit diagram of 3 point starter along with D.C.
shunt motor to run and control its speed to above normal.
(100)
b) List out the required tools, apparatus, machine, materials and write the sequence
procedure steps to perform the above exercise.
c) Connect, start, run the D.C shunt motor using 3 point starter and control the speed for
above normal.
***********​

Answer 1

.

a) Draw the circuit diagram using BIS symbols to run the AC single phase capacitor

start, induction run motor and change its direction of rotation, also measure the

current.

(59)

b) List out the required tools. meters, machine raw materials and write the sequence

procedure steps to perform the above task.

c) Connect run the single phase capacitor start, induction run motor and measure the

running curren, also reverse its direction of rotation,

2.

a) Draw the power and control circuits of an automatic star delta using 3 contactors

over load relay with timer using BIS symbol to run 3 phase squirrel cage induction

motor.

(100)

b) List out the required tools, components, (Contractors, relay, timer etc), materials and

write the procedure to assemble automatic star delta starter.

c) Assemble the 3 phase automatic star delta starter using 3 contactors, OLR, timer etc

and test the same by running the 3 phase squirrel cage induction motor.

3.

a) Draw the schematic connection circuit diagram of 3 point starter along with D.C.

shunt motor to run and control its speed to above normal.

(100)

b) List out the required tools, apparatus, machine, materials and write the sequence

procedure steps to perform the above exercise.

c) Connect, start, run the D.C shunt motor using 3 point starter and control the speed for

above normal.

***********