17) Temperature coefficient of resistance of a material is 0.005 Ohm/Degree centigrade. At 20 Degree centigrade, the resistance of a wire made up of this material is 1 Ohm. At what temperature the resistance will become 2 Ohm.

200 Degree Centigrade

220 Degree Centigrade

180 Degree Centigrade

None of these

Answer is:

220 Degree Centigrade

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

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18) Three 1.5 V cells each having internal resistance 10 Ohm are connected to this battery. What is the current through this circuit?

0.3 A

0.15 A

0.1 A

None of the above

Answer is:

0.1 A

19) A 10 Ohm resistor and 15 Ohm resistor are connected in series to a 2V cell. The voltage across the 10 Ohm resistor is measured as 2V. Which of the following is a possible cause?

10 Ohm resistor is short circuited

15 Ohm resistor is short circuited

15 Ohm resistor is open

None of the above

Answer is:

15 Ohm resistor is short circuited

20) A constant current of 2 mA charges a 20 microFarade capacitor for 2 s. Which of the following is true for the charging of the capacitor.

Capacitor voltages increases linearly from 0V to 200V

Capacitor voltages increases exponentially from 0V to 200V

Capacitor voltages increases linearly from 0V to 100V

Capacitor voltages increases exponentially from 0V to 100V

Answer is:

Capacitor voltages increases linearly from 0V to 200V

21) which of the following is true for a hot wire ammeter?

Uses thermal effect for measure ment

Deflection is proportional to square of current

Measures RMS value of the current

All of the above

Answer is:

All of the above

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

For more MCQ's Click Here

17) Temperature coefficient of resistance of a material is 0.005 Ohm/Degree centigrade. At 20 Degree centigrade, the resistance of a wire made up of this material is 1 Ohm. At what temperature the resistance will become 2 Ohm.

220 Degree Centigrade

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

Related ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key

18) Three 1.5 V cells each having internal resistance 10 Ohm are connected to this battery. What is the current through this circuit?

0.1 A

19) A 10 Ohm resistor and 15 Ohm resistor are connected in series to a 2V cell. The voltage across the 10 Ohm resistor is measured as 2V. Which of the following is a possible cause?

15 Ohm resistor is short circuited

20) A constant current of 2 mA charges a 20 microFarade capacitor for 2 s. Which of the following is true for the charging of the capacitor.

Capacitor voltages increases linearly from 0V to 200V

21) which of the following is true for a hot wire ammeter?

All of the above

ISRO Technician-B Electrician Question Paper - 2019 (Set - 1) with Answer Key