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Basic Electronics Quiz | Basic Electronics objective type questions and Answers

Free download in PDF Computer Awareness Multiple Choice Questions(MCQs) & Answers. These multiple choice questions on Computer Science are very useful for NIELIT, BCA, B.Sc. MCA, M.Sc. B.Tech, M.Tech, BE, ME students an interview for various positions like Web Developer, System Analyst etc.
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(21) The path between two points along which an electrical current can be carried is called
[A] A network
[B] A relay
[C] A circuit
[D] A loop
Answer: A circuit
(22) The device that exhibits negative resistance region is ………………..
[A] Diac
[B] Triac
[C] Transistor
[D] UJT
Answer: UJT
(23) The formula for current as per Ohm’s Law is
[A] Voltage / Resistance
[B] Resistance * Voltage
[C] Voltage + Resistance
[D] Resistance / Voltage
Answer: Voltage / Resistance
(24) When the temperature increases, the intrinsic stand off ratio ……….
[A] Increases
[B] Decreases
[C] Essentially remains the same
[D] None of the above
Answer: Essentially remains the same
(25) A UJT is sometimes called …………. diode
[A] Low resistance
[B] High resistance
[C] Single-base
[D] Double-base
Answer: Double-base
(26) The V-I characteristics for a triac in the first and third quadrants are essentially identical to those of ………………. in its first quadrant
[A] Transistor
[B] SCR
[C] UJT
[D] none of the above
Answer: SCR
(27) A diac has …………… pn junctions
[A] Four
[B] Two
[C] Three
[D] None of the above
Answer: Two
(28) A diac is …………………. switch
[A] An c.
[B] A d.c.
[C] A mechanical
[D] None of the above
Answer: An c.
(29) When a UJT is turned ON, the resistance between emitter terminal and lower base terminal …………….
[A] Remains the same
[B] Is decreased
[C] Is increased
[D] None of the above
Answer: Is decreased
(30) A triac can pass a portion of …………… half-cycle through the load
[A] Only positive
[B] Only negative
[C] Both positive and negative
[D] None of the above
Answer: Both positive and negative
31 The normal way to turn on a diac is by ………………..
[A] Gate current
[B] Gate voltage
[C] Breakover voltage
[D] None of the above
Answer: Breakover voltage
32 A triac is equivalent to two SCRs …………..
[A] In parallel
[B] In series
[C] In inverse-parallel
[D] None of the above
Answer: In inverse-parallel
33 A diac has ……………… semiconductor layers
[A] Three
[B] Two
[C] Four
[D] None of the above
Answer: Three
34 A triac is a …………. switch
[A] Bidirectional
[B] Unidirectional
[C] Mechanical
[D] None of the above
Answer: Bidirectional
35 A UJT has ……………….
[A] Two pn junctions
[B] One pn junction
[C] Three pn junctions
[D] None of the above
Answer: One pn junction
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