GATE EE 2021 : National Champion Quiz 5 (App update required to attempt this test)
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If a diode is connected in anti-parallel with a thyristor, then
During the turn-off process of a thyristor, the current flow does not stop at the instant when the current reaches zeros but continues to flow to a peak value in the reverse direction. this is due to
A signal of 10 V is applied to a 50 ohm coaxial transmission line, terminated in a 100 ohm load. The voltage reflection coefficient is
The derivation of Poynting vector requires: i. Gauss' Divergence Law ii. Faraday's law iii. Ampere-Maxwell's Law
The output voltage shown below is given to a MOSFET with a resistance of 1 Ω
If d=π/3, then the value of the power loss in MOSFET is
A 3-ϕfull converter bridge is connected to supply voltage of 230 V per phase and a frequency of 50 Hz. The source inductance is 4 mH and load current on dc side is constant at 20 A at 30ׄ° firing angle
The percentage voltage regulation due to source inductance is:
A 1 ϕ– Fully controlled bridge converter operates in continuous conduction mode from a 230 V, 50 Hz, 1 –ϕsupply with firing angle of a = 30o. The load resistance and inductance are 15 Ω and 30 mH respectively.
The rms value of 5th harmonic source current (in ampere) is__________.
A single phase full bridge voltage source inverter is feeding a RLC load with output voltage
Waveform as a square wave. If the reactance XC>XL then the output waveform will be
The magnetic flux density created by an infinitely long conductor carrying a current I at a radial distance R is
A parallel plate capacitor is charged to 100 µC at 200 V. If it is connected to another capacitor resulting in net charge of first capacitor is 25 × 10-6C then the capacitor of the new capacitor is
A single-phase voltage source inverter is feeding a purely inductive load as shown in the figure. The inverter is operated at 50 Hz in 180° square wave mode. Assume that the load current does not have any dc component. the peak value of the inductor current i0 (in A) will be
The velocity vector is given as . The divergence of this velocity vector at (1,1,1)