GATE EE 2014 Question Paper (02-Mar-2014) (Shift 1)

Which of the following is an invalid state in 8-4-2-1 Binary Coded Decimal counter

The transistor in the given circuit should always be in active region. Take V${}_{CE(sat)}$ = 0.2 V, V${}_{BE}$ = 0.7 V. The maximum value of R${}_C$ in Ω which can be used is

A sinusoidal ac source on the figure has an rms value of $\frac{20}{\sqrt{2}}$ V.Considering all possible values of RL, the minimum value of Rs in Ω to avoid burnout of zener diode is

A step – up chopper is used is feed a load at 400V dc from a 250V dc source. The inductor current is continuous. If the off time of the switch is 20μs, the switching frequency of the chopper is ______(in kHz)

In a constant V/f control of induction motor, the ratio V/f is maintained constant from 0 to base frequency, where V is the voltage applied to the motor at fundamental frequency f. Which of the following statements relating to low frequency operation of the motor is TRUE?