Question

Q1. In SPICE, a sequence of nonlinear operating points calculated while sweeping an input voltage or current, or a circuit parameter is termed as?
1. DC Analysis
2. AC Analysis
3. DC Transfer Curve Analysis
4. Noise Analysis

Q2. In a SPICE netlist statement .dc V2 0 1.8 .01 what does .01 signifies?
1. Applied DC bias
2. Applied AC bias
3. Increment in DC bias
4. Increment in AC bias

Q3. For a static design, which of the following statement is true?
1. The gate output is connected to either power or ground
2. The gate output is connected to both power and ground
3. The gate output is connected to power only
4. The gate output is connected to ground only

Q4. For a NMOS (threshold voltage = Vtn) based pass transistor based AND logic, when both the gates are on, then for an input equal to 1 (equivalent to VDD) , the output is
1. VDD - Vtn
2. 2(VDD – Vtn)
3. VDD + 2Vtn
4. VDD - 2Vtn

Q5. For a NAND-2 logic, if the widths of the pull down NMOS transistors are doubled, then assuming no change in the load capacitance, the high-to-low propagation delay (tpHL) for input vector (1,1) is
1. Unchanged
2.Reduced by two
3. Increased by two
4. Reduced by eight

Answer 1

noise analysis

applied ac bias

the gate output is connected either power or ground

vdd+2vtn

reduced by eight