RRB JE Stage II exam is scheduled to be conducted from 28th August to 1st September 2019. The overall merit for the selection will be made on the basis of the marks scored in stage II, so candidates need to prepare thoroughly for the second stage. To help the aspirants, Adda247 has come up with a study plan in which we will provide you daily quizzes of all technical subjects. The below quiz will be helpful for the candidates who opted Electronics as the exam group in RRB JE stage II.
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Q1. Kirchhoff’s current law is applicable to only
(a) junction in a network
(b) closed loops in a network
(c) electric circuits
(d) electronic circuits
Sol. Kirchhoff’s law state that at any node (junction) in an electrical circuit, the sum of currents flowing into that node is equal to the sum of currents flowing out of that node.
Q2. In the circuit shown in the Fig. R_th equals
Sol. R1 and R2 are in parallel and equivalent of this is in series with R3 Therefore Rth =
Q3. In closed-loop control system with positive value of feedback gain the overall gain of the system will
(c) be unaffected
(d) any of the above
Sol. Closed loop control system can be both positive and negative and with positive value of feedback gain where the overall gain of the system will increase and also the oscillations.
Q4. The initial response when the output is not equal to input is called
(a) Transient response
(b) Error response
(c) Dynamic response
(d) Either of the above
Sol. Transient response in the response at any time instant other than final response and this response is at any instant which is mainly dependent on the maximum peak overshoot and settling time.
Q5. The process of releasing electrons from a metal surface by supplying heat energy to it is called ……emission.
Sol. The process by which free electrons are emitted from the surface of a metal when external heat energy is applied is called thermionic emission. Thermionic emission occurs in metals that are heated to a very high temperature.
Q6. In a vacuum valve, anode current for zero anode voltage will be
(a) almost zero
(d) very high
Sol. In a vacuum valve, anode current for zero anode voltage will be almost zero.
Q7. The cumulative addition of the four binary bits (1 + 1 + 1 + 1) gives
Sol. 1 + 1 + 1 + 1 = 4
4 = 0000 0100
Q9. Logic state 1, in positive logic, corresponds to
(a) zero voltage
(b) lower voltage level
(c) positive voltage
(d) higher voltage level
Sol. Most logic systems use positive logic, in which case a logic “0” is represented by zero volts and a logic “1” is represented by a higher voltage.
Q10. What is the size of an int data type?
(a) 4 Bytes
(b) 8 Bytes
(c) Depends on the system/compiler
(d) Cannot be determined
Sol. The size of the data types depends on the system.
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