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MCQs

Total Questions : 219 | Page 16 of 22 pages
Question 151. A current of 16 amperes divides between two branches in parallel of resistances 8 ohms and 12 ohms respectively. The current in each branch is
  1.    6.4 A, 9.6 A
  2.    4.6 A, 9.6 A
  3.    6.4 A, 6.9 A
  4.    4.6 A, 6.9 A
 Discuss Question
Answer: Option A. -> 6.4 A, 9.6 A
Question 152. A light bulb draws 300 mA when the voltage across it is 240 V. The resistance of the light bulb is
  1.    400 Ω
  2.    1000 Ω
  3.    800 Ω
  4.    600 Ω
 Discuss Question
Answer: Option C. -> 800 Ω
Question 153. Varistors are
  1.    Non-linear resistors
  2.    Resistor with zero temperature co-efficient
  3.    Insulators
  4.    Carbon resistors
 Discuss Question
Answer: Option A. -> Non-linear resistors
Question 154. An electric filament bulb can be worked from
  1.    All of the listed here
  2.    Battery supply only
  3.    AC supply only
  4.    DC supply only
 Discuss Question
Answer: Option A. -> All of the listed here
Question 155. The rating of a fuse wire is always expressed in
  1.    Ampere-hours
  2.    kWh
  3.    Ampere-volts
  4.    Amperes
 Discuss Question
Answer: Option D. -> Amperes
Question 156. A resistance having rating 10 ohms , 10 W is likely to be a
  1.    Carbon resistor
  2.    Variable resistor
  3.    Wire wound resistor
  4.    Metallic resistor
 Discuss Question
Answer: Option C. -> Wire wound resistor
Question 157. A closed switch has a resistance of
  1.    Zero
  2.    About 50 ohms
  3.    Infinity
  4.    About 500 ohms
 Discuss Question
Answer: Option A. -> Zero
Question 158. The resistance of a few meters of wire conductor in closed electrical circuit is
  1.    Practically zero
  2.    High
  3.    Low
  4.    Very high
 Discuss Question
Answer: Option A. -> Practically zero
Question 159. The thickness of insulation provided on the conductor depends on
  1.    The magnitude of voltage on the conductor
  2.    None of the listed here
  3.    Both magnitude of voltage and current
  4.    The magnitude of current flowing through it
 Discuss Question
Answer: Option A. -> The magnitude of voltage on the conductor
Question 160. Two lamps 100 W and 40 W are connected in series across 230 V. Which of the following statement is correct?
  1.    40 W lamp will fuse
  2.    Both lamps will glow equally bright
  3.    40 W lamp will glow brighter
  4.    100 W lamp will glow brighter
 Discuss Question
Answer: Option C. -> 40 W lamp will glow brighter

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