In a diode valve the cathode temperature must be ( $\phi=$ work function)
  • AHigh and $\phi$ should be high
  • BHigh and $\phi$ should be low
  • CLow and $\phi$ should be high
  • DLow and $\phi$ should be high
[RPET 2002]
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    In the figure four plate characteristics of a triode at different grid voltage are shown. The difference between successive grid voltage is $1\ V.$ Which curve will have maximum grid voltage and what is its value?
    Image
    View Solution
  • 2
    Which statement is correct
    View Solution
  • 3
    In order to forward bias a $P N$ junction, the negative terminal of battery is connected to
    View Solution
  • 4
    The electrical circuits used to get smooth d.c. output from a rectifier circuit is called
    View Solution
  • 5
    For a triode, at $V_g=-1$ volt, the following observations were taken $V_p=75 V , I_p=2 mA ,  V_p=100 V , I_p=4 mA$. The value of plate resistance will be
    View Solution
  • 6
    The ratio of thermionic currents $(I / I)$ for a metal when the temperature is slowly increased $T_0$ to $T$ as shown in figure. ( $I$ and $I$ are currents at $T$ and respectively). Then which one is correct?

    Image

    View Solution
  • 7
    The mutual characteristic of triode is
    View Solution
  • 8
    Which of the following is true
    View Solution
  • 9
    In an amplifier the load resistance $R_L$ is equal to the plate resistance $\left(r_p\right)$. The voltage amplification is equal to
    View Solution
  • 10
    Which of these is unipolar transistor
    View Solution