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Basic Electronics Quiz | Basic Electronics objective type questions and Answers

Questions
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
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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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