55+ MOST IMP MCQ OF ELECTRICAL AND ELECTRONIC SYSTEM

Electrical & Electronic Systems MOST IMP MCQ Que: -) Square law modulators a. Have nonlinear current-voltage characteristics b. Are used for Amplitude Modulation Que: -) AM demodulation techniques are a. Square law demodulator b. Envelope detector Que: -) The process of recovering information signal from received carrier is known as a. Detection Que: -) Generation of SSB SC signal is done by a. Phase discrimination method b. Frequency discrimination method Que: -. Frames from one LAN can be transmitted to another LAN via the device Bridge Que: - How many digits of the DNIC (Data Network Identification Code) identify the country? A. first three Que: -What is the primary function of multiplexing? To allow a number of signals to make use of a single communications channel. Que: -) Which among the following stages is adopted in Splice Loss Experiment? a. Translational b. Rotational Que: -) Why is an electrical isolation required between several portions of an electronic circuit? a. Provision of high voltage protection b. Reduction in noise level Que: -) In an optical network, increase in the number of lasers the bit rate. : Increases Que: -) Which among the following parameters is/are decided by the front-end of a receiver? a. Sensitivity b. Bandwidth Que: -. Which of the following are limitations of break-even analysis? A) Static concept Que: -. Contribution is also known as a) Contribution margin Que: -. Safety guards on machines should be A. Always in position Que: -. Which of the following is indirect cost? D. Training for job following is direct cost. A. Cost of raw material B. cost of machining C. Power consumption in fabrication Que: -. Systematic appraisal of each job in the organization to determine its comparative value, is known as D. Job evaluation Que: -. Which of the following is a disciplinary action? D. Suspension Que: -) The power output from a hydroelectric plant depend on discharge, system efficiency. Que: -) In hydroelectric power plants operating cost is low and initial cost is high. Que: -) Water hammer is developed in a penstock. Que: -) With reference to hydrometer station, the graphical representation of the discharge as function of time is known as Hydro-graph. Que: -. Which among the following is not a renewable source of energy? (b) Biomass energy Que: -. Photovoltaic energy is the conversion of sunlight into: (a) Chemical energy Que: -. Horizontal axis and vertical axis are the types of: (b) Wind mills Que: -. Steam reforming is currently the least expensive method of producing: (c) Hydrogen Que: -. A fuel cell, in order to produce electricity, burns: (c) Hydrogen Que: -. Fuel cells are: (b) Hydrogen battery Que: -. Both power and manure is provided by: (c) Biogas plants Que: -The outermost layer of the earth is: (c) Crust Que: -The one thing that is common to all fossil fuels is that they: (b) Contain carbon