MCQ
Which of these is unipolar transistor
  • A
    Point contact transistor
  • Field effect transistor
  • C
    $PNP$ transistor
  • D
    None of these

Answer

Correct option: B.
Field effect transistor
b
(b)$FET$ is unipolar.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A ray of light passes through equilateral prism $(\mu  = 1.5)$ such that angle of incidence is equal to angle of emergence and the later is equal to $3/4^{th}$ of prism angle. The angle of deviation is....$^o$
Compare enolate $A$ with enolate $B$.

Which of the following statements is true ?

$Assertion$ : A tennis ball bounces higher on hills than in plains.
$Reason$ : Acceleration due to gravity on the hill is greater than that on the surface of earth
A rigid horizontal smooth rod AB of mass 0.75 kg and length 40 cm can rotate freely about a fixed vertical axis through its mid-point O. Two rings each of mass 1 kg initially at rest at a distance of 10 cm from O on either side of the rod. The rod is set in rotation with an angular velocity of 30 radian per sec and when the rings reach the ends of the rod, the angular velocity (in rad/sec) is:
Function of rectifier is
A passenger inside a bus moving with uniform speed suddenly finds that a ball at rest, starts moving towards his left. It means that the bus now is
Two bodies having same mass $40\, kg$ are moving in opposite directions, one with a velocity of $10$$m/s$ and the other with $7\,m/s.$ If they collide and move as one body, the velocity of the combination is ........ $m/s$
$P-$ type semiconductor is formed when

A. $As$ impurity is mixed in $Si$

B.$Al$ impurity is mixed in $Si$

C.$B$  impurity is mixed in $ Ge$

D.$P$ impurity is mixed in $Ge$

Consider two identical springs each of spring constant $k$ and negligible mass compared to the mass $M$ as shown. Fig. $1$ shows one of them and Fig. $2$ shows their series combination. The ratios of time period of oscillation of the two $SHM$ is $\frac{ T _{ b }}{ T _{ a }}=\sqrt{ x },$ where value of $x$ is

(Round off to the Nearest Integer)

This question has Statement-I and Statement-2. Of the four ch.oices given after the Statements, choose the one that best describes the two Statetnents.

Statement $-1$ : A capillary is dipped in a liquid and liquid rises to a height $h$ in it. As the temperature of the liquid is raised, the height $h$ increases (if the density of the liquid and the angle of contact remain the same).

Statement $-2$ : Surface tension of a liquid decreases with the rise in its temperature.