Which of the following statements is not correct for thermistors?

Which of the following devices has the 'negative resistance' characteristic?

Consider the following statements regarding an antenna:

1. It is a transducer
2. Its performance is essentially frequency sensitive
3. It is a reciprocal device
4. With increase in its effective aperture area, width of the radiated beam increases.

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

For plane wave propagating in free space or two conductor transmission line, what must be the relationship between the phase velocity v_p , the group velocity v_g and speed of light c?

For what positive value of K does the polynomial s⁴ + 8s³ + 24s² + 32s + K have roots with zero real parts?

What is the purpose of a start in RSserial communication protocol?

Time delay produced by an instruction code given below using 2 MHz clock is:
MVI A, FFH
LOOP: DCR A
JNZ Loop

The system which is unstable is __________ .

The number of roots of s³ + 2s² + 7s + 3 = 0 in the left half of the s-plane is :

Which of the following antennas uses a number of varying length parallel elements?

. The signal is __________ .

Which one of the following compounds is widely used for making ferrites?

. The signal is __________ .

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

In a material, the Fermi level is located between the centre of the forbidden band and the conduction band. Then what is that material?

The magnitude plot of a composite signal x(t) = e^3jt + e^4jt is __________ .

Which one of the following logic families can be operated using a supply voltage from 3 V toV?

An average response rectifier type electronic voltameter has a d.c. voltage ofV applied to it. What is the meter reading?

Which of the following are included in the architecture of a computer?

1. Addressing modes, CPU
2. Instruction set, data formats
3. Secondary memory, operating system

Consider the following statements regarding the class-B power amplifiers (Complementary symmetry type):

1. The efficiency of the amplifier is higher than that of class-A amplifier
2. The power output is low
3. Crossover distortion is present
4. The standby power dissipation is absent.

Which of the following capabilities are available in a Universal Shift Register?

1. Shift left
2. Shift right
3. Parallel load
4. Serial add

Assertion (A): Cut-in voltage for Germanium diode is greater than that for silicon diode.

Reason (R): Germanium diode has a higher reverse saturation current than silicon diode.

Simplify : A + B + A B + (A + B)AB + C(B + AB)

Which one of the following is a regulated power supply?

Number of fundamental cut-sets of any graph will be

Consider a silicon p-n junction at room temperature having the following parameters:
Doping on the n-side = 1 x 10¹⁷ cm^-3
Depletion width on the n-side = 0.1 μm
Depletion width on the p-side = 1.0 μm
Intrinsic carrier concentration = 1.4 x 10¹⁴F. cm^-1.
Thermal voltage = 26mV
Permittivity of free space = 8.x 10^-14F. cm^-1.
Dielectric constant of silicon =A built in potential of the junction.

Consider the following statements:
For am long common power line connecting a switch to a light bulb

1. It is a distributed circuit.
2. Time delay for propagation through it is negligible.
3. It is the form of a shielded coaxial cable of circular cross-section.
4. As the intensity of the lamp varies, input impedance of this line also changes.

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is

In a CMOS CS amplifier, the active load is obtained by connecting a

The number of distinct Boolean expressions of 3 variables is

A 2 μF capacitor is shunted by a 1 kΩ maintained at temperatureK. The rms noise voltage across the capacitor over the entire frequency band is:

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of:

The feedback control system shown in figure is stable.

A parallel plate capacitor has surface density of r_s C/m². The dielectric inside capacitor is air. The electric field intensities outside and inside the capacitor are

. The signal is __________ .

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

The counter shown in figure is built using 4 negative edge triggered toggle FFs. The FFs can be set synchronously when R =The combinational logic required to realize a modulocounter is

The magnitude plot of a composite signal x(t) = e^3jt + e^4jt is __________ .

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

A signal with ±V ranged and 1 KHz band width is being digitized using a sample and hold circuit and abit quantizer. The quantization step is :

V_R at t < T, t = ∞

The number of distinct Boolean expressions of 3 variables is

Find current i.

Assuming the OP-AMP to be ideal, the voltage gain of the amplifier shown in figure is

In x = the value of x is

Using 4-bit numbers (n =if k = 0011₂, how is k expressed in 2's complement?

If the open-loop transfer function is a ratio of a numerator polynomial of degree 'm' and a denominator polynomial of degree 'n', then the integer (n - m) represents the number of: