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ISRO Technician-B
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ISRO Technician-B Electrician 2016
8

ISRO Technician-B Electrician Question Paper - 2016 (Set - 1) with Answer Key

8) A ceiling fan of blade size 1400mm (56 inches) will have motor rating

10 to 15 W

50 to 70 W

120 to 180 W

250 to 500 W

Answer is:

50 to 70 W

ISRO Technician-B Electrician Question Paper - 2016 (Set - 1) with Answer Key

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Related ISRO Technician-B Electrician Question Paper - 2016 (Set - 1) with Answer Key

9) A shunt DC motor armature resistance is 1 ohm and field coil resistance is 100 ohms. Back emf constant is 9 volts for 100 RPM. The DC supply voltage is 100 V and it is running with a speed 1000 RPM. What is DC supply current?

11A

10A

1A

0.1A

Answer is:

11A

10) What is the major cause for open in the Armature circuit?

Open in field coil

Short in commutate segment

Bad brush tension

Wrong brush position

Answer is:

Bad brush tension

11) Which statement describes a characteristic feature of routine preventive maintenance?

Maintenance schedule needs to be decided, based on maintenance requirements entered in the manual.

Maintenance could be done either during the working of the machine or during shut interval down period

Maintenance done at irregular frequencies

Maintenance is performed only if the machine has a fault or defect

Answer is:

Maintenance schedule needs to be decided, based on maintenance requirements entered in the manual.

12) A long shunt compound generator delivering a load 100A at 500 V has armature, series field and shunt field resistances as 0.1 Ohm, 0.03 Ohm and 200 Ohm respectively. What is the armature current?

97.5A

100A

102.5A

105A

Answer is:

102.5A

ISRO Technician-B Electrician Question Paper - 2016 (Set - 1) with Answer Key

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