For an n-channel FET, What is the direction of current flow?

Consider the following statements (a) BJT is a current controlled device with high input impedance and high gain band width (b) FET is a voltage- controlled device with high input impedance and low gain bandwidth (c) UJT is a negative resistance device and can be used as an oscillator (d) FET and UJT can be used for amplification Which of the above statements are correct

A

(a) and (b)

B

(b) and (c)

C

(c) and (d)

D

(a) and (d)

Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow, and k = Thermal conductivity of the body)

A

k. A. (dT/dx)

B

k. A. (dx/dT)

C

k. (dT/dx)

D

k. (dx/dT)

Fourier's law of heat conduction is (where Q = Amount of heat flow through the body in unit time, A = Surface area of heat flow, taken at right angles to the direction of heat flow, dT = Temperature difference on the two faces of the body, dx = Thickness of the body, through which the heat flows, taken along the direction of heat flow and k = Thermal conductivity of the body)

A

$${\text{kA}}\frac{{{\text{dT}}}}{{{\text{dx}}}}$$

B

$${\text{kA}}\frac{{{\text{dx}}}}{{{\text{dT}}}}$$

C

$${\text{k}}\frac{{{\text{dT}}}}{{{\text{dx}}}}$$

D

$${\text{k}}\frac{{{\text{dx}}}}{{{\text{dT}}}}$$

For a p-channel FET, What is the direction of current flow?

A

Source to drain

B

Drain to source

C

Gate to source

D

Gate to drain

Which of the following activities should be shown separately in the cash flow statement prepared as per Accounting Standard-3?
1. Cash flow from borrowing activities
2. Cash flow from operating activities
3. Cash flow from financing activities
4. Cash flow from investing activities
5. Cash flow from miscellaneous activitie

A

1, 2 and 3

B

1, 3 and 5

C

1, 3 and 4

D

1, 2 and 5

Which of the following activities should be shown separately in the cash flow statement prepared as per accounting standard-3?
I. Cash flow from borrowing activities.
II. Cash flow from operating activities.
III. Cash flow from financing activities.
IV. Cash flow from investing activities.
V. Cash flow from miscellaneous activities.

A

I, II and III

B

I, III and V

C

II, III and IV

D

I, IV and V

Thermal runaway is not possible in FET because as the temperature of FET increases

A

The mobility decreases

B

The transconductance increases

C

The drain current increases

D

None of the above

Consider the following statements regarding a differential amplifier using an FET pair. The differential output offset voltage is due to: 1. Mismatch between FET parameters 2. Difference between the values of resistors used in the circuit even though they are marked nominally equal 3. Variation in the operating voltage of the circuit Which of the above statements are correct?

A

1, 2 and 3

B

2 and 3 only

C

1 and 3 only

D

1 and 2 only

How does a FET behave when the v-I characteristics are to the left of pinch off for an n channel FET?

A

Voltage controlled resistor

B

Amplifier

C

Switch

D

Diode

When an electric current coil of a wattmeter is connected to the electric current path R and the voltage coil is connected between the electric current R path and the neutral side of the balanced three phase supply, it shows 10 kW. The line voltage along the phase sequence RYB is 400 V. The current drawn by the current path is 54 A. What is the new reading of the wattmeter if the voltage coil is connected between the lines B and the Y paths, even if the electric current coil is continuously present in the line R?

A

13 kW

B

0

C

-13 kW

D

20 kW

For an n-channel FET, What is the direction of current flow?

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