ESE 2021 EE Technical Quiz -19

If  is convolved with it-self, then minimum value of convolved signal is:

Consider output voltage of single-pulse modulation inverter shown below. The Peak value of 5^th harmonic is _____Volts.

If , where R₁ = (100 ± 0.5%) Ω, R₂ = (1000 ± 0.5%) Ω, R₃ = (842 ± 0.5%) Ω. Then the limiting error  of R_X is ________(approx.).

Nyquist rate of Sinc(100t) is ________Hz.

For 4-bit DAC full scale output voltage to resolution ratio is:

System OLTF is K/s³. Its Bode plot intersects the 0 dB line at ω = 2. Possible value of K is:

A synchronous generator is connected to an infinite Bus, if synchronous reactance = 1.3 p.u., Infinite Bus voltage = 1 p.u. The equivalent reactance by which synchronous generator is connected to infinite bus is 0.2 p.u. If maximum output is 1.2 p.u., alternator EMF in p.u. is:

What is the type of falut ? If,

I_positive = j1.653 p.u.

I_negative = -j0.5° p.u.

I_zero = –j1.153 p.u.

Statement 1: In DC machines, to reduce sparking dummy coils are used.

Statement 2: In DC machines, armature MMF is stationary with respect to field poles.

Statement 1: For Depletion type MOSFET, Gate to source voltage is zero.

Statement 2: Depletion type MOSFET can use zero Biased.