| Questions |
| Questions |
| 1 | In sinusoidal circuits, the presence of the inductor determines: | ||
| A) | Thevenin's teorem does not apply | ||
| B) | Kirchhoff's principles does not apply | ||
| C) | Node and knot equations are algebraic | ||
| D) | Node and knot equations are different | ||
| 2 | Resolving a sinusoidal circuito, a general current is a fuction composed of : : | ||
| A) | Only one permanent period | ||
| B) | Only one transitional period | ||
| C) | a transitional and permanent period | ||
| D) | two sinusoidal periods | ||
| 3 | Resolving a sinusoidal circuito, an unknown size's permanent period: : | ||
| A) | Depends on the initial conditions | ||
| B) | Is the regime solution | ||
| C) | Cancels the regime | ||
| D) | Does not depend on bipole generators | ||
| 4 | Resolving a sinusoidal circuit, an unknown size transitional period : : | ||
| A) | Depends on the initial conditions | ||
| B) | Is the regime solution | ||
| C) | Dipend only on the generators' effects | ||
| D) | Does not cancel the regime | ||
| 5 | A sinusoidal current with a frequency f can be represented by the projection on the axis of ordinates of a vector over time: : | ||
| A) | Rotating with an angle velocity equal to 2 π f | ||
| B) | Rotating with an angle velocity equal to f | ||
| C) | Fixed with a module equal to 2 π f | ||
| D) | Fixed with a module equal to f | ||
| 6 | With a varibale time period t, reciprocal phases of vectors representing tensions and currents of a sinusoidal circuit: : | ||
| A) | descend | ||
| B) | Ascend | ||
| C) | Vary by sinusoidal law | ||
| D) | Remain constant | ||
| 7 | Between a phasor and a sinusoidal space: | ||
| A) | Lays a two-way correspondance | ||
| B) | There is no correspondance | ||
| C) | Is a proportional relation | ||
| D) | Is an equal relation | ||
| 8 | In practical applications it is conventional to represent the phasor module: : | ||
| A) | By the corresponding sinusoidal size phase | ||
| B) | By the corresponding sinusoidal size maximum value | ||
| C) | By the corresponding sinusoidal size efficient value | ||
| D) | By the corresponding sinusoidal size absolute value | ||
| 9 | The phasorial representation of sinusoidal currents and tensions: : | ||
| A) | Does not preserve the validity of Kirchhoff's principles | ||
| B) | Preserves the validity of both Kirchhoff principles | ||
| C) | Only preserves the validity of the Kirchhoff principal of tensions | ||
| D) | Only preserves the validity of the Kirchhoff principal of currents | ||
| 10 | A phasor can be represented: : | ||
| A) | By a real number | ||
| B) | By a complex number | ||
| C) | By a whole number | ||
| D) | By a rational number | ||