12 Official GATE PH Questions with Verified Solutions & Answer Keys
In a typical npn transistor the doping concentrations in emitter, base and collector regions are Ce, Cв and C. respectively. These satisfy the relation, (А) Св > Сс> Св (В) Сд >Св>...
\cdot Vec Vin TI C, The circuit shown above (A) is a common-emitter amplifier (B) uses a pnp transistor (C) is an oscillator (D) has a voltage gain less than one...
Consider the following circuit in which the current gain dc of the transistor is 100. + 15 V 900 100 100 k Which one of the following correctly represents the load line (col...
A voltage regulator has ripple rejection of -50dB. If input ripple is 1 mV, what is the output ripple voltage in μV? The answer should be up to two decimal places. __________...
The transition line, as shown in the figure, arises between 2D3/2 and 2P1/2 states without any external magnetic field. The number of lines that will appear in the presence of a we...
For a bipolar junction transistor, which of the following statements are true?...
In a nucleus, the interaction V0l⃗ ⋅ s⃗ is responsible for creating spin-orbit doublets. The energy difference between p1/2 and p^3/2 states in units of V0 \hbar^2 2 is ___________...
Choose the most appropriate matching of the items in Column 1 with those in Column 2. Column 1 Column 2 (i) PIN diode P. Voltage regulation (ii) Tunnel diode Q. Radio frequency and...
The Geiger-Muller counter is a device to detect \alpha, \beta and \gamma radiations. It is a cylindrical tube fi lled with monatomic gases like a rgon, and polyatomic gases such as...
In pion nucleon scattering, the pion and nucleon can combine to form a short lived bound state called the Δ particle (𝜋 + N → Δ). The masses of the pion, nucleon and the Δ particl...
A typical biasing of a silicon transistor is shown in figure. The value of common-emitter current gain β for the transistor is 100. Ignore reverse saturation current. The output vo...
The output signal (current Id) of a reversed biased (with a voltage Vb) photodiode, on which light is incident, is fed to an amplifier (see figure). The output voltage is digitized...