Q.1
Determine the relationship between log-antilog method.
  • a) lnVx×lnVy = ln(Vx+Vy)
  • b) lnVx / lnVy = ln(Vx-Vy)
  • c) lnVx -lnVy = ln(Vx/Vy)
  • d) lnVx+ lnVy = ln(Vx×Vy)
Q.2
Which circuit allows to double the frequency?
  • a) Frequency doubler
  • b) Square doubler
  • c) Double multiplier
  • d) All of the mentioned
Q.3
Compute the output of frequency doubler. If the inputs Vx = Vsinωt and Vy = Vsin(ωt+θ) are applied to a four quadrant multiplier?
  • a) Vo= { Vx×Vy× [cosθ-(cosθ×cos2ωt)+(sinθ×sin2ωt)]}/ Vref
  • b) Vo= { Vx×Vy× [cosθ-(cosθ×cos2ωt)+(sinθ×sin2ωt)]}/ 2
  • c) Vo= { Vx×Vy× [cosθ-(cosθ×cos2ωt)+(sinθ×sin2ωt)]}/(2×Vref)
  • d) Vo= – { Vx×Vy× [cosθ-(cosθ×cos2ωt)+(sinθ×sin2ωt)]}/(2×Vref)
Q.4
How to remove the dc term produced along with the output in frequency doubler?
  • a) Use a capacitor between load and output terminal
  • b) Use a resistor between load and output terminal
  • c) Use a Inductor between load and output terminal
  • d) Use a potentiometer between load and output terminal
Q.5
Find the voltage range at which the multiplier can be used as a squarer circuit?
  • a) 0 – Vin
  • b) Vref – Vin
  • c) 0 – Vref
  • d) All of the mentioned
Q.6
Calculate the output voltage of a squarer circuit, if it input voltage is 3.5v. Assume Vref = 9.67v.
  • a) 2.86v
  • b) 1.27v
  • c) 10v
  • d) 4.3v
Q.7
Which circuit can be used to take square root of a signal?
  • a) Divider circuit
  • b) Multiplier circuit
  • c) Squarer circuit
  • d) None of the mentioned
Q.8
Find the output voltage of squarer circuit?
  • a) Vo = √( Vref/|Vin|)
  • b) Vo = √( Vref×|Vin|)
  • c) Vo = √( Vref2×|Vin|)
  • d) Vo = √( Vref×|Vin|2)
Q.9
Find the current, IL flowing in the circuit given below
Questionlinear-integrated-circuits-questions-answers9.jpg
  • a) IL = 1.777mA
  • b) IL = 1.048mA
  • c) IL = 1.871mA
  • d) None of the mentioned
Q.10
A square root circuit build from multiplier is given an input voltage of 11.5v. Find its corresponding output voltage?
  • a) 11v
  • b) 15v
  • c) 13v
  • d) Cannot be determined
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