Related InterviewSolutions

• The process of regaining of information from carrier wave at the receiver is termed asA. modulationB. transmissionC. propagationD. demodulation
• The output of a two input NOR gate is in state 1 when :-A. all input are highB. all inputs are lowC. only one of its inputs is highD. only one of its inputs is low
• In an oscillator, for sustained oscillations, Barkhausen criterion is `Abeta` equal to (A = voltage gain without feedback and `beta` = feedback factor)A. zeroB. less than 1C. oneD. infinity
• The resistance of an ideal voltmeter isA. low resistanceB. high resistanceC. infinite resistanceD. zero resistance
• The primary coil of an ideal stepup transformer has 100 turns and the transformer ratio is also 100. The input voltage and power are 220 V and 1100 W. Calculate (i) number of turns in secondary (ii) current in primary (iii) voltage across secondary (iv) current in secondary (v) power in secondary.A. 600B. 500C. 400D. 300
• The upper atmosphere layer is known asA. stratosphereB. mesosphereC. troposphereD. inonosphere
• Nuclide having the same number of protons and also neutrons but differ in radioactivity are called asA. isobarsB. `alpha-`particleC. istopseD. `gamma-` particles
• Colour of light emitted by LED depends uponA. its forward biasB. its reverse biasC. the band gap of the material of semiconductorD. its size
• In photoelectric effect, the number of photoelectrons emitted is proportional to :A. varies inversely with frequencyB. varies directly with frequencyC. varies inversely with intensityD. varies idirectly with intensity
• The energy of a photon of wavelength `lamda` is given byA. `hc lamda`B. `(h lamda)/©`C. `(lamda)/(hc)`D. `(hc)/(lamda)`