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SymbolsTransformerRelayPower-SystemBasic-electricalACSR-ConductorCircuit-BreakerInterview-questions-of-Basic-ElectricityInterview-questions-of-transformerInsulatorCurrent-TransformerMCQMCQ-powersystemThermal-power-stationInterview-questions-of-Power-SystemPower-ElectronicsInterview-questions-of-Underground-CableInterview-questions-of-IlluminationIlluminationMCQ-of-ElectronicsMCQ-of-Basic-ElectricalMCQ-of-Transformers MCQ-of-D.C-motor MCQ-of-D.C-generatorsMCQ-Control-SystemMCQ-Measurementsmcq-of-Generation-power-systemMCQ-of-Induction-MotorMCQ-of-Transmission-DistributionMCQ-of-Electrical-MachinesMCQ-of-Alternator-and-Synchronous-MotorsMCQ-Electric-Power

Multiple Choice Question (MCQ) of Electronics page-11


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151. The “slide rule” is said to be

a) Analog computer
b) Digital computer
c) Hybrid computer
d) Tele-type machine

Ans: (a)

152. The series combination of the resistance and capacitance is put across the thyristor to protect it from

a) High current
b) High voltage
c) High rate of change of voltage
d) High rate of change of current
e) Thermal runaway

Ans: (c)

153. A radar measures the distance by measuring the

a) Voltage amplitude of the transmitted r.f. pulses
b) Voltage amplitude of an echo
c) Time between transmitted r.f. pulses
d) Time between its r.f. pulse and its echo

Ans: (d)

154. Inductors are not common in ICs.

a) True
b) False

Ans: (a)

155. Sio2 is a conductor.

a) True
b) False

Ans: (b)

156. In semiconductor ICs a resistance is made when the base of the transistor is made.

a) True
b) False

Ans: (a)

157. In semiconductor ICs a diode is similar to a capacitor.

a) True
b) False

Ans: (a)

158. It is easy to make n-p-n and p-n-p transistors on the same chip.

a) True
b) False

Ans: (a)

159. Hybrid ICs are generally cheaper than other type ICs.

a) True
b) False

Ans: (b)

160. In triggering triac with a gate pulse a low current has a long turn on time and a high current a short turn on time.

a) True
b) False

Ans: (a)

161. A 4-volt change in control grid voltage is equal to a 4-volt change in plate voltage on the amount of electrons reaching plate.

a) True
b) False

Ans: (b)

162. All electrons emitting materials are placed on the filaments.

a) True
b) False

Ans: (b)

163. An increase in grid bias of thyratron will require an increase in anode voltage to make it conduct.

a) True
b) False

Ans: (a)

164. What is the distance between crests of a radio wave whose frequency is 3 × 108 Hz?

a) 1 m/cycle
b) 1 cm/cycle
c) 40 cm/cycle
d) 10 cm/cycle

Ans: (a)

165. The phototubes are relatively high resistance devices even when they conduct.

a) True
b) False

Ans: (a)


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