# The frequency response of a linear system G (jω) is provided in the tubular form below

1.  6 dB and 300 (b) 6 dB and -300 (c) - 6 dB and 300 (d) - 6 dB and 300-6 dB and -300

2.  6 dB and -300

3.  - 6 dB and 300

4.  -6 dB and -300

4

6 dB and 300

(b) 6 dB and -300

(c) - 6 dB and 300

(d) - 6 dB and 300-6 dB and -300

Explanation :
No Explanation available for this question

# Consider the following statement (i) The compensating coil of a low power factor wattmeter compensates the effect of the impedance of the current coil. (ii) The compensating coil of a low power factor wattmeter compensates the effect 0of the impedance of the voltage coil circuit.

1.  (i) is true but (ii) is false

2.  (i) is false but (ii) is true

3.  both (i) and (ii) are true

4.  both (i) and (ii) are false

4

(i) is false but (ii) is true

Explanation :
No Explanation available for this question

# A low-pass filter with a cut-off frequency of 30Hz is cascaded with a high-pass filter with a cut-off frequency of 20Hz.The resultant system of filters will function as

1.  an all-pass filter

2.  an all-stop filter

3.  an band stop (band-reject) filter

4.  a band - pass filter

4

a band - pass filter

Explanation :
No Explanation available for this question

# The pressure coil of a dynamometer type wattmeter is

1.  highly inductive

2.  highly resistive

3.  purely resistive

4.  purely inductive

4

highly resistive

Explanation :
No Explanation available for this question

# The measurement system shown in the figure uses three sub-systems in cascade whose gains are specified as G1;G2 and-1/G3.The relative small errors associated with each respective subsystem G1; G2 and G3 are ε1, ε2 and ε3.The  error associated with the output is

1.  ε1+ε2+1/ε3

2.  ε1.ε2/ε3

3.  ε1+ε2-ε3

4.  ε1+ε2-ε3

4

ε123

Explanation :
No Explanation available for this question

# The following circuit has a source voltage Vs as shown in the graph.The current through the circuit is also shown The element connected between a and b could be

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The two inputs of a CRO are fed with two stationary periodic signals.In the X-Y mode,the screen shows a figure which changes from ellipse to circle and back to ellipse with its major axis changing orientation slowly and repeatedly.The following inference can be made from this.

1.  The signals are not sinusoidal

2.  The amplitudes of the signals are very close but not equal

3.  The signals are sinusoidal with their frequencies very close but not equal

4.  There is a constant but small phase difference between the signals

4

There is a constant but small phase difference between the signals

Explanation :
No Explanation available for this question

# The increasing order of speed of data access for the following devices is (i)Cache Memory (ii)CDROM (iii)Dynamic RAM (iv)Processor Registers (v)Magnetic Tape

1.  (v),(ii),(iii),(iv),(i)

2.  (v),(ii),(iii),(i),(iv)

3.  (ii),(i),(iii),(iv),(v)

4.  (v),(ii),(i),(iii),(iv)

4

(v),(ii),(iii),(i),(iv)

Explanation :
No Explanation available for this question

# A field excitation of 20A in a certain alternator results in an armature current of 400A in short circuit and a terminal voltage of 2000V on open circuit.The magnitude of the internal voltage drop within the machine at a load current of 200A is

1.  (A) 1V (B) 10V (C) 100V (D) 1000V

2.  10V

3.  100V

4.  1000V

4

1000V

Explanation :
No Explanation available for this question

1.  0mA

2.  1mA

3.  2mA

4.  6mA

4