Virtual Labs

Design of Pass Transistor using SPICE Code

In ngspice code for pass transistor logic, what does the 'M' parameter represent in the MOSFET model?

a: Channel length modulation Explanation

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b: Transistor width Explanation

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c: Threshold voltage Explanation

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d: Drain current Explanation

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How is the transistor model specified in ngspice code for pass transistor logic?

a: As a resistor Explanation

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b: As a capacitor Explanation

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c: As a voltage source Explanation

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d: As a subcircuit Explanation

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What is the purpose of the 'Vt' parameter in ngspice code for MOSFETs?

a: Transistor width Explanation

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b: Threshold voltage Explanation

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c: Transistor length Explanation

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d: Drain current Explanation

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In ngspice code, what statement is used to define the operating temperature for simulation?

a: .TEMP Explanation

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b: .PARAM Explanation

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c: .OPTIONS TEMP Explanation

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d: .TEMPERATURE Explanation

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What ngspice directive is used to include a model file in the simulation?

a: .INCFILE Explanation

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b: .INCLUDE Explanation

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c: .MODEL Explanation

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d: .FILE Explanation

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How is the operating point analysis specified in ngspice code?

a: .OP Explanation

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b: .ANALYSIS OP Explanation

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c: .OPTIONS OP Explanation

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d: .POINT ANALYSIS Explanation

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What statement is used to specify the input voltage in a transient analysis using ngspice code?

a: .V Explanation

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b: .INPUT Explanation

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c: .TRAN Explanation

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d: .IN Explanation

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What is the purpose of the '.IC' statement in ngspice code?

a: To specify initial conditions Explanation

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b: To control temperature Explanation

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c: To define device models Explanation

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d: To set simulation options Explanation

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What ngspice command is used to run a transient analysis simulation?

a: .RUN Explanation

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b: .START Explanation

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c: .TRAN Explanation

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d: .SIM Explanation

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How is the ngspice code modified to include parasitic capacitance in a pass transistor logic circuit?

a: By adding '.CAP' statements Explanation

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b: By adding '.PARASITIC' statements Explanation

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c: By modifying the transistor width Explanation

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d: By adjusting the '.TEMP' parameter Explanation

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