MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Every____________ is a ____________ but every __________ is not a __________ |
| A. | Mesh, loop, loop, mesh |
| B. | Loop, mesh, mesh, loop |
| C. | Loop, mesh, loop, mesh |
| D. | Mesh, loop, mesh, loop |
| Answer» B. Loop, mesh, mesh, loop | |
| 2. |
Find the value of v if v1=20V and value of current source is 6A. |
| A. | 10V |
| B. | 12V |
| C. | 14V |
| D. | 16V |
| Answer» C. 14V | |
| 3. |
Calculate the power across each 10 ohm resistance. |
| A. | 1000kW, 1000kW |
| B. | 1kW, 1kW |
| C. | 100W, 100W |
| D. | 100kW, 100kW |
| Answer» C. 100W, 100W | |
| 4. |
Batteries are generally connected in______ |
| A. | Series |
| B. | Parallel |
| C. | Either series or parallel |
| D. | Neither series nor parallel |
| Answer» B. Parallel | |
| 5. |
In a series circuit, which of the parameters remain constant across all circuit elements such as resistor, capacitor and inductor etcetera? |
| A. | Voltage |
| B. | Current |
| C. | Both voltage and current |
| D. | Neither voltage nor current |
| Answer» C. Both voltage and current | |
| 6. |
Materials having resistance almost equal to zero is _______ |
| A. | Semi-conductor |
| B. | Conductor |
| C. | Superconductors |
| D. | Insulators |
| Answer» D. Insulators | |
| 7. |
The sum of the voltages over any closed loop is equal to __________ |
| A. | 0V |
| B. | Infinity |
| C. | 1V |
| D. | 2V |
| Answer» B. Infinity | |
| 8. |
Which, among the following is a unit for resistivity? |
| A. | ohm/metre |
| B. | ohm/metre² |
| C. | ohm-metre |
| D. | ohm-metre² |
| Answer» D. ohm-metre² | |
| 9. |
What is the value of the current I? |
| A. | 8A |
| B. | 7A |
| C. | 6A |
| D. | 5A |
| Answer» B. 7A | |
| 10. |
Calculate the resistance between A and B. |
| A. | 3.56 ohm |
| B. | 7 ohm |
| C. | 14.26 ohm |
| D. | 29.69 ohm |
| Answer» B. 7 ohm | |
| 11. |
Calculate the value of V1 and V2. |
| A. | 4V, 6V |
| B. | 5V, 6V |
| C. | 6V, 7V |
| D. | 7V, 8V |
| Answer» B. 5V, 6V | |
| 12. |
The voltage across the short is? |
| A. | 135V |
| B. | Infinity |
| C. | Zero |
| D. | 11.25V |
| Answer» D. 11.25V | |
| 13. |
What is the voltage across the 5 ohm resistor if current source has current of 17/3 A? |
| A. | 2.32V |
| B. | 5.21V |
| C. | 6.67V |
| D. | 8.96V |
| Answer» C. 6.67V | |
| 14. |
KVL deals with the conservation of? |
| A. | Mass |
| B. | Momentum |
| C. | Charge |
| D. | Energy |
| Answer» E. | |
| 15. |
Calculate VAB. |
| A. | 3.5V |
| B. | 12V |
| C. | 9.5V |
| D. | 6.5V |
| Answer» B. 12V | |
| 16. |
Find the current in the circuit. |
| A. | 1 A |
| B. | 2 A |
| C. | 3 A |
| D. | 4 A |
| Answer» C. 3 A | |
| 17. |
Voltage across the 60ohm resistor is______ |
| A. | 72V |
| B. | 0V |
| C. | 48V |
| D. | 120V |
| Answer» C. 48V | |
| 18. |
Calculate the current across the 20 ohm resistor. |
| A. | 10A |
| B. | 20A |
| C. | 6.67A |
| D. | 36.67A |
| Answer» B. 20A | |
| 19. |
What is the value of x if the current in the circuit is 5A? |
| A. | 15 ohm |
| B. | 25 ohm |
| C. | 55 ohm |
| D. | 75 ohm |
| Answer» B. 25 ohm | |
| 20. |
Find the voltage across the 6-ohm resistor. |
| A. | 150V |
| B. | 181.6V |
| C. | 27.27V |
| D. | 54.48V |
| Answer» D. 54.48V | |
| 21. |
What is the voltage measured across a series short? |
| A. | Infinite |
| B. | Zero |
| C. | The value of the source voltage |
| D. | Null |
| Answer» C. The value of the source voltage | |
| 22. |
In a ____________ circuit, the total resistance is smaller than the smallest resistance in the circuit. |
| A. | Series |
| B. | Parallel |
| C. | Either series or parallel |
| D. | Neither series nor parallel |
| Answer» C. Either series or parallel | |
| 23. |
The currents in the three branches of a parallel circuit are 3A, 4A and 5A. What is the current leaving it? |
| A. | 0A |
| B. | Insufficient data provided |
| C. | The largest one among the three values |
| D. | 12A |
| Answer» E. | |
| 24. |
The current in each branch of a parallel circuit is proportional to _________ |
| A. | The amount of time the circuit is on for |
| B. | Proportional to the value of the resistors |
| C. | Equal in all branches |
| D. | Proportional to the power in the circuit |
| Answer» C. Equal in all branches | |
| 25. |
What happens to the current in the series circuit if the resistance is doubled? |
| A. | It becomes half its original value |
| B. | It becomes double its original value |
| C. | It becomes zero |
| D. | It becomes infinity |
| Answer» B. It becomes double its original value | |
| 26. |
KCL is applied at _________ |
| A. | Loop |
| B. | Node |
| C. | Both loop and node |
| D. | Neither loop nor node |
| Answer» C. Both loop and node | |
| 27. |
Which among the following is a unit for electrical energy? |
| A. | V(volt) |
| B. | kWh(kilowatt-hour) |
| C. | Ohm |
| D. | C(coloumb) |
| Answer» C. Ohm | |
| 28. |
KVL is applied in ____________ |
| A. | Mesh analysis |
| B. | Nodal analysis |
| C. | Both mesh and nodal |
| D. | Neither mesh nor nodal |
| Answer» B. Nodal analysis | |
| 29. |
KCL can be applied for __________ |
| A. | Planar networks |
| B. | Non-planar networks |
| C. | Both planar and non-planar |
| D. | Neither planar nor non-planar |
| Answer» D. Neither planar nor non-planar | |
| 30. |
A current of 2A flows in a wire offering a resistance of 10ohm. Calculate the energy dissipated by the wire in 0.5 hours. |
| A. | 72Wh |
| B. | 72kJ |
| C. | 7200J |
| D. | 72kJh |
| Answer» B. 72kJ | |
| 31. |
Calculate the ratio of the resistivity of 2 wires having the same length and same resistance with area of cross section 2m2 and 5m2 respectively. |
| A. | 5:7 |
| B. | 2:7 |
| C. | 2:5 |
| D. | 7:5 |
| Answer» D. 7:5 | |
| 32. |
Materials which easily allow the passage of electric current are known as ______ |
| A. | Insulators |
| B. | Conductors |
| C. | Dielectrics |
| D. | Semi-conductors |
| Answer» C. Dielectrics | |
| 33. |
Which of the following statements are true with regard to resistivity? |
| A. | Resistance depends on the temperature |
| B. | Resistance does not depend on the temperature |
| C. | Resistivity depend on the length |
| D. | Resistivity depend on area of cross section |
| Answer» B. Resistance does not depend on the temperature | |
| 34. |
Which of the following statements are true about insulators? |
| A. | Insulators have a positive temperature coefficient |
| B. | Insulators have a negative temperature coefficient |
| C. | Insulators have zero temperature coefficient |
| D. | Insulators have infinite temperature coefficient |
| Answer» C. Insulators have zero temperature coefficient | |
| 35. |
A copper coil has a resistance of 200 ohms when its mean temperature is 0 degree centigrade. Calculate the resistance of the coil when its mean temperature is 80 degree centigrade. Temperature coefficient of copper is 0.004041 centigrade-1 |
| A. | 264.65 ohm |
| B. | 264.65 kilo-ohm |
| C. | 286.65 ohm |
| D. | 286.65 kilo-ohm |
| Answer» B. 264.65 kilo-ohm | |
| 36. |
Which of the following statements are true about metals? |
| A. | Metals have a positive temperature coefficient |
| B. | Metals have a negative temperature coefficient |
| C. | Metals have zero temperature coefficient |
| D. | Metals have infinite temperature coefficient |
| Answer» B. Metals have a negative temperature coefficient | |
| 37. |
The rise or fall in resistance with the rise in temperature depends on ________ |
| A. | The property of the conductor material |
| B. | The current in the metal |
| C. | Property of material as well current in that material |
| D. | Does not depend on any factor |
| Answer» B. The current in the metal | |
| 38. |
What is the unit of temperature coefficient? |
| A. | ohm/centigrade |
| B. | ohm-centigrade |
| C. | centigrade-1 |
| D. | centigrade |
| Answer» D. centigrade | |
| 39. |
If the temperature is increased in semi-conductors such that the resistance incessantly falls, it is termed as _______ |
| A. | Avalanche breakdown |
| B. | Zener breakdown |
| C. | Thermal runway |
| D. | Avalanche runway |
| Answer» D. Avalanche runway | |
| 40. |
The reciprocal of resistivity is________ |
| A. | Conductance |
| B. | Resistance |
| C. | Conductivity |
| D. | Impedance |
| Answer» D. Impedance | |