RRB Assistant Loco Pilot - Engineering physics and basic electrical engineering: units and measurements, work power energy, current voltage resistance, basic circuits Online Test (MCQ Quiz)

1. What is the SI unit of force?

A) Joule B) Watt C) Newton D) Pascal

2. Which quantity is the rate of doing work?

A) Energy B) Power C) Momentum D) Torque

3. The SI unit of energy is:

A) Newton-meter B) Watt-second C) Joule D) Kilowatt-hour

4. What does Ohm's Law state?

A) Power is voltage times current B) Current is directly proportional to voltage and inversely proportional to resistance C) Resistance is directly proportional to voltage and current D) Voltage is directly proportional to resistance and current

5. Which of the following is the SI unit of electric current?

A) Volt B) Ohm C) Ampere D) Coulomb

6. What is the SI unit of electric potential difference (voltage)?

A) Ampere B) Ohm C) Watt D) Volt

7. Resistance is measured in:

A) Siemens B) Farads C) Henries D) Ohms

8. A circuit where components are connected end-to-end is called a:

A) Parallel circuit B) Series circuit C) Combination circuit D) Open circuit

9. In a parallel circuit, the voltage across each component is:

A) The same B) Different C) Zero D) Dependent on resistance

10. In a series circuit, the current flowing through each component is:

A) Different B) The same C) Zero D) Dependent on voltage

11. What is the formula for calculating power (P) when voltage (V) and current (I) are known?

A) P = V / I B) P = I / V C) P = V * I D) P = V + I

12. Work done is defined as force multiplied by:

A) Velocity B) Acceleration C) Displacement in the direction of the force D) Time

13. Kinetic energy is the energy of:

A) Position B) Motion C) Chemical bonds D) Temperature

14. The formula for kinetic energy (KE) is:

A) KE = mgh B) KE = 1/2 mv^2 C) KE = Fd D) KE = mc^2

15. Potential energy is the energy of:

A) Motion B) Position or configuration C) Heat D) Light

16. The SI unit of power is:

A) Joule B) Watt C) Newton D) Volt-Ampere

17. If a 60W light bulb is used for 10 hours, how much energy does it consume in kilowatt-hours (kWh)?

A) 0.6 kWh B) 6 kWh C) 60 kWh D) 600 kWh

18. What is the total resistance of two 10 Ohm resistors connected in series?

A) 5 Ohms B) 10 Ohms C) 15 Ohms D) 20 Ohms

19. What is the total resistance of two 10 Ohm resistors connected in parallel?

A) 5 Ohms B) 10 Ohms C) 15 Ohms D) 20 Ohms

20. According to Joule's Law of Heating, the heat produced in a conductor is proportional to:

A) Voltage B) Current C) Resistance D) The square of the current, resistance, and time

21. Which instrument is used to measure electric current?

A) Voltmeter B) Ammeter C) Ohmmeter D) Galvanometer

22. A voltmeter is always connected in ______ with the component across which the voltage is to be measured.

A) Series B) Parallel C) Combination D) Opposition

23. An ammeter is always connected in ______ with the component through which the current is to be measured.

A) Series B) Parallel C) Combination D) Shunt

24. What is the SI unit of electric charge?

A) Ampere B) Volt C) Ohm D) Coulomb

25. The rate of flow of electric charge is called:

A) Resistance B) Voltage C) Current D) Conductance

26. What is the unit of electrical energy consumption in household meters?

A) Joule B) Watt-hour C) Kilowatt-hour D) Volt-Ampere

27. A 100 Ohm resistor has 10 Volts applied across it. What is the current flowing through it?

A) 0.1 A B) 1 A C) 10 A D) 1000 A

28. If the voltage across a resistor is doubled, while the resistance remains constant, the current will:

A) Halve B) Double C) Remain the same D) Become zero

29. If the resistance of a conductor is increased, its ability to conduct current:

A) Increases B) Decreases C) Remains the same D) Becomes infinite

30. What is the unit of electrical conductance?

A) Ohm B) Siemens C) Farad D) Henry

31. Which of the following is a unit of power?

A) Joule per second B) Newton-meter C) Kilogram meter per second squared D) Coulomb per second

32. The energy stored in a charged capacitor is a form of ______ energy.

A) Kinetic B) Potential C) Thermal D) Chemical

33. The energy stored in an inductor due to current flow is a form of ______ energy.

A) Potential B) Kinetic C) Magnetic D) Electrical

34. A circuit with a break in it, preventing current flow, is called an:

A) Closed circuit B) Short circuit C) Open circuit D) Series circuit

35. When a conductor is short-circuited, the resistance becomes approximately:

A) Infinite B) Very high C) Zero D) One Ohm

36. What is the unit of measurement for electrical resistance in the Imperial system?

A) Ohm B) Volt C) Ampere D) There is no distinct Imperial unit; Ohm is universally used.

37. Which law describes the conservation of energy in an electrical circuit?

A) Ohm's Law B) Kirchhoff's Voltage Law C) Joule's Law D) Ampere's Law

38. Kirchhoff's Current Law (KCL) is based on the principle of conservation of:

A) Energy B) Charge C) Momentum D) Mass

39. What is the unit of electrical power rating for appliances?

A) Kilojoules B) Joules per hour C) Watts D) Kilograms

40. A 12V battery is connected to a 4 Ohm resistor. What is the current flowing?

A) 3 A B) 48 A C) 0.33 A D) 0.25 A

41. What is the unit of electrical potential energy?

A) Joule B) Volt C) Coulomb D) Watt

42. The product of voltage and current represents:

A) Resistance B) Power C) Energy D) Charge

43. Which physical quantity is measured in Joules?

A) Power B) Force C) Energy D) Current

44. What is the SI unit of electrical resistance?

A) Volt B) Ampere C) Ohm D) Farad

45. In a parallel circuit, if one branch is opened, the current in other branches will:

A) Increase B) Decrease C) Remain unchanged D) Become zero

46. The ability of a material to oppose the flow of electric current is called:

A) Conductance B) Resistance C) Permittivity D) Inductance

47. What is the unit of electric charge?

A) Ampere B) Watt C) Coulomb D) Volt

48. Which quantity is defined as the work done per unit charge?

A) Current B) Resistance C) Power D) Voltage

49. If the length of a wire conductor is doubled, its resistance will:

A) Halve B) Double C) Remain the same D) Become four times

50. What is the SI unit of electric current?

A) Volt B) Ohm C) Ampere D) Watt

Engineering physics and basic electrical engineering: units and measurements, work power energy, current voltage resistance, basic circuits - Online Test

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