Explore topic-wise MCQs in Engineering.

What about the stability of system in

An energy signal has G(f) = 10. Its energy density spectrum is

The first geostationary satellite launched in 1965 was called

Rotation of a geosynchronous satellite means its

The present total cost per watt of power generation in geosynchronous orbit is nearly Rs.

For F₁ layer the maximum ionic density is 2.3 x 10⁴ electrons per cc. The critical frequency for this layer will be

Which one of the following does represents the electric field lines for the TE₀₂ mode in the cross section of a hollow rectangular metallic waveguide?

Radiation intensity of a dipole depends strongly on frequency. If at a frequency f, the intensity of radiation is 'I'. Then at a frequency of f/2, the intensity will be

The input impedance of short-circuited line of length l where /4 < l < /2, is

A wave is propagated in a waveguide at frequency of 9 GHz and separation is 2 cm between walls find cut off wavelength for dominant mode.

Find the radiation resistance of an antenna of length /10 meter?

Current derating may be necessary when thyristors are operating in

Assertion (A): Power transistor has lower switching time than SCR

Reason (R): Power transistor has greater switching time than SCR

A 3 kV circuit uses SCR of 800 V rating. If derating is 25%, the number of SCRs in series is

For a 12 pulse operation, the two 6 pulse units are fed by

A single phase semiconverter is feeding a highly inductive load and has freewheeling diode across the load. The waveshapes of output voltage and output current

The number of distinct Boolean expression of 4 variables is

The fixed count that should be used so that the output register will represent the input for a 6 bit dual slope A/D converter uses a reference of -6v and a 1 MHz clock. It uses a fixed count of 40 (101000).

A memory system of size 16 k bytes is to be designed using memory chips which have 12 address lines and 4 data lines each. The number of such chips required to design the memory system is

In a 7 segment display, LEDs b and c lit up. The decimal number displayed is

7BF₁₆ = __________ ₂

A counter type A/D converter contains a 4 bit binary ladder and a counter driven by a 2 MHz clock. Then conversion time

Zero suppression is not used in actual practice.

The hexadecimal number (3E8)₁₆ is equal to decimal number

AB + AB =

In a BCD to 7 segment decoder the minimum and maximum number of outputs active at any time is

A three state switch has three outputs. These are

1's complement of 11100110 is

Which device has one input and many outputs?

Minimum number of 2-input NAND gates required to implement the function F = (x + y) (Z + W) is

A carry look ahead adder is frequently used for addition because

The counter in the given figure is

For the truth table of the given figure Y =

A 12 bit ADC is used to convert analog voltage of 0 to 10 V into digital. The resolution is

In register index addressing mode the effective address is given by

A full adder can be made out of

If the functions w, x, y, z are as follows.
w = R + PQ + RS ,
x = PQR S + PQR S + PQ R S


Then

The output of a half adder is

An AND gate has two inputs A and B and one inhibit input 3, Output is 1 if

The greatest negative number which can be stored is 8 bit computer using 2's complement arithmetic is

For the gate in the given figure the output will be

In the expression A + BC, the total number of minterms will be

The circuit in the given figure is

Which of the following is non-saturating?

A device which converts BCD to seven segment is called

The number of digits in octal system is

In 2's complement representation the number 11100101 represents the decimal number

BCD input 1000 is fed to a 7 segment display through a BCD to 7 segment decoder/driver. The segments which will lit up are

The sensitivity curve of a standard receiver is represented by

A transponder is a satellite equipment which