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You Are On Multi Choice Question Bank SET 1069

53451. What is the resonant frequency in the given circuit?

(A): 1.5 kHz (B): 11.6 Hz (C): 275.8 Hz (D): 3.2 kHz

53452. Series RLC voltage or impedance totals must be calculated by:
(A): adding vectors (B): graphing the angles (C): multiplying the values (D): subtracting the values

53453. When XC = XL the circuit:
(A): applied voltage is zero (B): draws maximum current (C): draws minimum current (D): is at resonance

53454. How much current will flow in a series RLC circuit when VT = 100 V, XL = 160 , XC = 80 , and R = 60 ?
(A): 1 A (B): 1 mA (C): 10 A (D): 6.28 A

53455. When a full band of frequencies is allowed to pass through a filter circuit to the output, the resonant circuit is called a:
(A): band-stop filter (B): bandpass filter (C): high-pass filter (D): low-pass filter

53456. At resonance, the term bandwidth includes all frequencies that allow what percentage of maximum current to flow?
(A): 50 (B): 62.3 (C): 70.7 (D): 95.3

53457. What is the voltage across the capacitor in the given circuit?

(A): 11.9 V (B): 16.1 V (C): 22.9 V (D): 6.8 V

53458. What is the impedance of the circuit in the given circuit?

(A): 1.05 k (B): 1.33 k (C): 2.19 k (D): 3.39 k

53459. In a series RLC circuit the current can be found using:
(A): both of the above (B): IT=VR/R (C): IT=VS/Z (D): none of the above

53460. What is the true power consumed in a 30 V series RLC circuit if Z = 20 ohms and R = 10 ohms?
(A): 15.0 watts (B): 22.5 watts (C): 30.0 watts (D): 45.0 watts

53461. What is the current phase angle for a parallel RLC circuit when IL = 15.3 A, IC = 0.43 A, and IR = 3.5 A?
(A): –4.25 degrees (B): –76.7 degrees (C): 76.7 degrees (D): 88.8 degrees

53462. At any resonant frequency, what voltage is measured across the two series reactive components?
(A): applied (B): inductive and capacitive (C): reactive (D): zero

53463. What is the resonance frequency?
(A): 31.8 Hz (B): 31.8 kHz (C): 7.1 kHz (D): 71 Hz

53464. What is the short cut key to open the dialog box?
(A): Alt+F12 (B): Ctrl+F12 (C): F12 (D): Shift+F12

53465. What is the bandwidth in the given circuit. If the winding resistance of the coil is 12 ?

(A): 47.2 kHz (B): 53.7 kHz (C): 6.4 kHz (D): 60.2 kHz

53466. At any resonant frequency, what net voltage is measured across the two series reactive components?
(A): Applied voltage (B): Reactive voltage (C): VL + VC voltage (D): Zero voltage

53467. If the bandwidth of a filter increases:
(A): Q decreases (B): the center frequency decreases (C): the half-power frequency decreases (D): the roll-off rate increases

53468. Series RLC impedance or voltage totals must always be calculated by
(A): adding values vectorially (B): graphing the angles (C): multiplying the values (D): subtracting the values

53469. What is the current through the capacitor in the given circuit?

(A): 11.4 mA (B): 3.5 mA (C): 5.5 mA (D): 9 mA

53470. What is the total impedance of a 60 Hz series RLC circuit when XL = 7.5 ohms, XC = 265.3 ohms, and R = 33 ohms?
(A): 1989.75 ohms (B): 257.8 ohms (C): 259.9 ohms (D): 290.8 ohms

53471. What is the total current for the nonideal circuit in the given circuit. If it is at resonance?

(A): 0 A (B): 284 A (C): 3.3 mA (D): 38.5 mA

53472. What is the high cutoff frequency for an RLC circuit that resonates at 2000 Hz and has a bandwidth of 250 Hz?
(A): 1750 Hz (B): 2125 Hz (C): 2250 Hz (D): 8.0 Hz

53473. Current in a series RLC circuit may always be used as:
(A): a lagging vector (B): a leading vector (C): a reference (D): an angle

53474. What is the impedance of the circuit?
(A): 12.2 k (B): 14.5 k (C): 17.8 k (D): 20.3 k

53475. Identify the wrong pair
(A): Bauxite:Amarkantak plateau (B): Coal:Digboi (C): Copper:Balaghat (D): Iron ore:Kudremukh

53476. Which is the wrong pair
(A): Abdul kalam:Wings of fire (B): Audacity of hope:Barrack Obama (C): Freedom from fear:Sonia Sotomayor (D): Long walkto freedom:Nelson Mandela

53477. What is the approximate phase angle in a series RLC circuit when VC = 117 V, VR = 14.5 V, and VL = 3.3 V?
(A): –172.7 degrees (B): –45.0 degrees (C): –82.7 degrees (D): –90.0 degrees

53478. Which statement best describes reactance in a series RLC circuit?
(A): Capacitive reactance is always dominant. (B): Inductive reactance is always dominant. (C): Resistance is always dominant. (D): The larger of the two reactances is dominant.

53479. What is the band pass (F1 – F2) of an RLC filter that resonates at 150 kHz and has a coil Q of 30?
(A): 100.0 kHz to 155.0 kHz (B): 147.5 kHz to 152.5 kHz (C): 149,970 Hz to 150,030 Hz (D): 295.5 kHz to 4500 kHz

53480. What is the power factor?
(A): 0.279 (B): 0.479 (C): 0.679 (D): 0.879

53481. What is the phase angle?
(A): -28.5º (B): -61.4º (C): 28.5º (D): 61.4º

53482. What would be the power factor for an RLC circuit that acts inductively?
(A): –90 degrees lagging (B): +90 degrees leading (C): one (D): zero

53483. Voltage lags current in an RLC circuit when it acts:
(A): capacitively (B): inductively (C): resistively (D): resonantly

53484. What is the bandwidth of the circuit in the given circuit?

(A): 1.5 kHz (B): 11.6 Hz (C): 275.9 Hz (D): 3.2 kHz

53485. What is the voltage across R1, C1, and L1?
(A): VR = 156 V, VC = 165 V, VL = 441 V (B): VR = 178 V, VC = 187 V, VL = 503 V (C): VR = 219 V, VC = 232 V, VL = 619 V (D): VR = 260 V, VC = 276 V, VL = 735 V

53486. With the frequency given, the circuit in the given circuit is operating above resonance.

(A): False (B): True

53487. The current through the inductor is 5 amps.
(A): False (B): True

53488. Resonance will occur when XC = XL in the circuit below.
(A): False (B): True

53489. The resonant frequency fo is 19 kHz.
(A): False (B): True

53490. The impedance is 1177 .
(A): False (B): True

53491. The current lags the voltage in the given circuit.

(A): False (B): True

53492. The impedance is 160 .
(A): False (B): True

53493. The greater the selectivity, the wider the bandwidth.
(A): False (B): True

53494. A parallel tuned circuit can be used to couple energy from one circuit to another.
(A): False (B): True

53495. The impedance is 9684 .
(A): False (B): True

53496. In a series RLC circuit, at above resonance the circuit is more capacitive than it is inductive.
(A): False (B): True

53497. The voltage across the inductor is 77.8 volts.
(A): False (B): True

53498. If the given circuit were at resonance, the total current would be at its maximum.

(A): False (B): True

53499. Series LC combinations are used more often in tuned amplifier circuits than are parallel LC combinations.
(A): False (B): True

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