1st PUC physics Series-12 December 3, 2020December 23, 2020wefru PUC Science 1st Year Physics Series-12 quiz 0 Created on December 02, 2020 By wefru 1st PUC Physics Series 12 TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 Q.111 A NPN transistor conducts when Collector is positive and the emitter is negative with respect to the base Collector is positive and the emitter is at the same potential as the base Both collector and emitter are positive with respect to the base Both collector and emitter are negative with respect to the base 2 / 10 Q.112 Which of the following is true Common base transistor is commonly used because the current gain is maximum Common emitter is commonly used because the current gain is maximum Common collector is commonly used because the current gain is maximum Common emitter is the least used transistor 3 / 10 Q.113 For a common base configuration of PNP transistor Ic/IE = 0.98 then the maximum current gain in common emitter configuration will be 24 52 63 8 4 / 10 Q.114 In a PNP transistor working as a common-base amplifier, the current gain is 0.96 and emitter current is 7.2 mA. The base current is 0.29 mA 1.29 mA 2.29 mA 3.29 mA 5 / 10 Q.115 Which is the least doped region in a transistor? Either emitter or collector Base Emitter Collector 6 / 10 Q.116 The transistors provide good power amplification when they are used in Common collector configuration Common emitter configuration Common base configuration None of these 7 / 10 Q.117 For a transistor the parameter b= 99. The value of the parameter is a is 0.99 1.02 1.30 2.01 8 / 10 Q.118 In a PNP transistor the base is the N-region. Its width relative to the P-region is Smaller Larger Same Not related 9 / 10 Q.119 Which among the following parameters acts as an initiator for the operation of an oscillator in the absence of input signal? Noise figure Noise voltage Noise power Noise temperature 10 / 10 Q.120 Multivibrators belongs to which of the following category? Square wave oscillators Sinusoidal oscillators Ramp wave oscillators Triangular wave oscillators Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz