Sail E0 Webinar

MCQs

Total Questions : 330 | Page 28 of 33 pages
Question 271. . If a current of 40 mA flows through a series circuit consisting of a 0.4 F capacitor and a resistor in series with a 4 kHz, 40 Vac source, what is the total circuit impedance?
  1.    10 omega.gif
  2.    100 omega.gif
  3.    1 k omega.gif
  4.    1 M omega.gif
 Discuss Question
Answer: Option C. -> 1 k omega.gif
Question 272. . What is the total opposition to current in a series RC circuit called?
  1.    impedance
  2.    inductance
  3.    reactance
  4.    resistance
 Discuss Question
Answer: Option A. -> impedance
Question 273. . In a capacitive circuit, current flow is limited to
  1.    charging periods
  2.    discharging periods
  3.    neither charging periods nor discharging periods
  4.    both charging periods and discharging periods
 Discuss Question
Answer: Option D. -> both charging periods and discharging periods
Question 274. . Which of the following statements is true?
  1.    The voltage to which a capacitor is charged can change instantaneously.
  2.    The current in a capacitive circuit takes time to change.
  3.    A fully charged capacitor appears as a short to dc current.
  4.    An uncharged capacitor appears as a short to an instantaneous change in current.
 Discuss Question
Answer: Option D. -> An uncharged capacitor appears as a short to an instantaneous change in current.
Question 275. . Which of the following determines the capacitance of a capacitor?
  1.    Plate area, dielectric strength, and plate separation
  2.    Voltage rating, dielectric constant, and temperature coefficient
  3.    Temperature coefficient, plate area, and plate separation
  4.    Plate area, dielectric constant, and plate separation
 Discuss Question
Answer: Option D. -> Plate area, dielectric constant, and plate separation
Question 276. . If C1, a 4.7 F capacitor, and C2, a 3.3 F capacitor are in series with 18 Vdc applied, what is the voltage across C1?
  1.    3.3 V
  2.    7.4 V
  3.    6.6 V
  4.    9.4 V
 Discuss Question
Answer: Option B. -> 7.4 V
Question 277. . Most older types of paper capacitors have been replaced by which type of construction?
  1.    electrolytic
  2.    plastic film
  3.    oxide casing
  4.    waxed paper
 Discuss Question
Answer: Option B. -> plastic film
Question 278. .  What is the capacitive reactance if I = 1 amp, V = 2 volts, C = 5 F, and frequency = 10 Hz?
  1.    0.2
  2.    0.5
  3.    0.02
  4.    0.003
 Discuss Question
Answer: Option D. -> 0.003
Question 279. . What is the impedance of a series RC circuit that consists of a 0.22 F capacitor and a 200-ohm resistor connected to a 3 kHz source?
  1.    214 ohms
  2.    313 ohms
  3.    414 ohms
  4.    880 ohms
 Discuss Question
Answer: Option B. -> 313 ohms
Question 280. . In a purely capacitive circuit,
  1.    current leads voltage by 90°
  2.    voltage leads current by 90°
  3.    current lags voltage by 90°
  4.    current and voltage have a phase relationship of 0°
 Discuss Question
Answer: Option A. -> current leads voltage by 90°

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

DSP Combined 1 Free Revision Test SAIL JO E-0
GPOE / GPA Combined 1 Free Revision Test SAIL JO E-0
BSP Plant Specific Review Test SAIL JO E-0
BSL Combined 1 Free Revision Test SAIL JO E-0
GFM Combined 1 Free Revision Test SAIL JO E-0