Radio Receivers

1.The noise generated by a resistor depends upon

its resistance value its operating temperature both its resistance value and operating temperature none of the above

2.In a superheterodyne receiver

the IF stage has better selectivity than RF stage the RF stage has better selectivity than IF stage the RF stage has same selectivity than IF stage none of the above

3.The function of an AM detector circuit is to

rectify the input signal discard the carrier provide audio signal all of the above

4.Which of the following should be used in order to prevent overloading or the last IF amplifier in a receiver?

Variable selectivity Variable sensitivity Double conversion Squelch

5.Most popular IF for receivers tuning to 540 to 1650 kHz is

433 kHz 455 kHz 545 kHz 555 kHz

Satellite Communication

1.The first geostationary satellite launched in 1965 was called

ANIK EARLY BIRD (Intelsat-I) WESTAR MOLNIYA

2.Rotation of a geosynchronous satellite means its

drift from stationary position wobbling three-axis stabilization three-dimensional stabilization

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

20 50 100 5

4.Noise temperature of Sun is more than __________ °K.

1000 5000 100000 500

5.A 20 m antenna gives a certain uplink gain at frequencies of 4/6 GHz. For getting same gain in the 20/30 GHz band, antenna size required is metre.

100 4 1 10

Steel Structure Design

1.The effective length of a compression member of length L held in position and restrained in direction at one end and effectively restrained in direction but not held in position at the other end, is

L 0.67 L 0.85 L 2 L

2.The ratio of shearing stress to shearing strain within elastic limit, is known as

modulus of elasticity shear modulus of elasticity bulk modulus of elasticity tangent modulus of elasticity

3.For determination of allowable stress in axial compression, Indian Standard Institution has adopted

Euler's formula Rankine formula Engesser formula Secant formula

4.The method of design of steel framework for greatest rigidity and economy in weight, is known as

simply design semi-rigid design fully rigid design none of these.

5. If the pitch is 6 cm and rivet value is 4 tonnes, the number of rivets required for a riveted connection carrying an eccentric load of 15 tonnes at a distance of 30 cm from the centre line, is

6 8 10 12

Railways

1.Mr. W. Simms, the consulting Engineer to the Government of India recommended the gauge for Indian railways

1.435 m as adopted in England 1.800 m as per Indian conditions 1.676 m as a compromise gauge 1.000 m as a standard gauge

2.If absolute levels of rails at the consecutive axles A, B, and C separated by 1.8 metres are 100.505 m, 100.530 m, and 100.525 m respectively, the unevenness of rails, is

0.065 m 0.055 m 0.045 m 0.035 m

3.A CST-9 sleeper consists of

two inverted triangular pots on either side of rail seat a central plate with a projected key and box on the top of plate a single two way key provided on the gauge side to hold the rail to sleeper all the above

4.Charles Vignoles invented the flat footed rails in

1814 1836 1846 1873

5.To design a cross-over between parallel tracks, the required components are :

two switch, points, two acute angle crossings and two check rails two switch points, two acute angle crossings and four check rails two switch points, two acute angle crossings and six check rails none of these.

Language Processors

1.Which of the following functions is/ are performed by the loader?

Allocate space in memory for the programs and resolve symbolic references between object decks Physically place the machine instructions and data into memory Adjust all address dependent locations, such as address constants, to correspond to the allocated space All of the above

2. Convert the 11014B machine language instructions into assembly language, assuming that they were not generated by pseudo-ops

ASRA LOADA h#OD4E, i STOREA h#014B, d ADDA h#01FE, i

3.The advantage(s) of incorporating the macro processor into pass 1 is/ are

many functions do not have to be implemented twice Functions are combined and it is not necessary to create intermediate files as output from the macro processor and input to the assembler more flexibility is available to the programmer in which he/she may use all the features of the assembler in conjunction with macros All of the above

4.In which addressing mode, the effective address of the operand is generated by adding a constant value to the contents of register?

absolute mode indirect mode immediate mode index mode

5.A self-relocating program is one which

cannot be made to execute in any area of storage other than the one designated for it at the time of its coding or translation consists of a program and relevant information for its relocation can itself perform the relocation of its address-sensitive portions All of the above

Electronic Principles

1. In an intrinsic semiconductor, the number of free electrons

Equals the number of holes Is less than the number of holes Is greater than the number of holes Impossible to say

2.A device that converts mechanical into electrical energy is?

solar cell thermocouple chemical cell generator

3.Which one of the following kinds of materials has the lowest permeability?

A diamagnetic material A paramagnetic material A feiTomagnetic material All of the above

4.The total impedance of a parallel RLC circuit:

always increases as the applied frequency increases is equal to the sum of the values of resistance, inductive reactance and capacitive reactance always decreases as the applied frequency increases is maximum at the resonant frequency

5.The rise time of a pulse waveform is the time required for the voltage to rise:

from zero to its rms value from zero to its peak value from 10% of the peak value to 70.7% of the peak value from 10% of the peak value to 90% of the peak value

Web Services

1. What are Windows services?
   Windows services, previously known as NT services, are applications that are installed on the system as system services. In other words, Windows services are applications that run in the background with the Windows operating system. The primary use of Windows services is to reduce the consumption of memory required for performing backend operations. Let's take an example to understand this easily. Suppose you want to perform a variety of functions, such as monitor the performance of your computer or application, check the status of an application, and manage various devices, such as printers. 

   
   

   In such a case, you can use Windows services to reduce memory consumption. In addition, Windows services can run on your system even if you have not logged on to your computer. In addition, these services do not have any user interface.
2. Can you share a process between Windows services?
   Yes, you can share a process between Windows services.
3. In .NET, which is the parent class to create all Windows services?
   The ServiceBase class is the parent class to create all Windows services.