Short notes
Objective questions (Answers are given below)
- Transient disturbance is produced in a circuit
whenever
(a) it is suddenly connected or disconnected
from the supply
(b) it is shorted
(c) its applied voltage is changed suddenly
(d) all of the above. - There are no transients in pure resistive
circuits because they
(a) offer high resistance
(b) obey Ohm’s law
(c) have no stored energy
(d) are linear circuits. - Transient currents in electrical circuit are
associated with
(a) inductors
(b) capacitors
(c) resisters
(d) both (a) and (b). - The transients which are produced due to
sudden but energetic changes from one
steady state of a circuit to another are called
……. transients.
(a) initiation (b) transition
(c) relaxation (d) subsidence - In an R-L circuit connected to an alternating
sinusoidal voltage, size of transient current
primarily depends on
(a) the instant in the voltage cycle at which
circuit is closed
(b) the peak value of steady-state current
(c) the circuit impedance
(d) the voltage frequency. - Double-energy transients are produced in
circuits consisting of
(a) two or more resistors
(b) resistance and inductance
(c) resistance and capacitance
(d) resistance, inductance and capacitance. - The transient current in a loss-free L-C
circuit when excited from an ac source is a/
an ….. sine wave.
(a) over damped (b) undamped
(c) under damped
(d) critically damped. - Transient current in an R-L-C circuit is
oscillatory when
(a) R = 0 (b) R > 2 L / C
(c) R < 2 L / C (d) R = 2 L / C
1.(d) 2. (c) 3. (d) 4. (b) 5. (a) 6. (d) 7. (b) 8. (c)