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The network formed by resistors and capacitors for modifying the rate of change of gain and the phase shift is called a compensating network. Which of the following statements are not correct ? (A) The main purpose of a compensating network is to modify the performance of op-amp ciruit over the desired frequency range (B) There are two types of op-amps : internally compensated and externally compensated (C) 741 C is an externally compensated op-amp while 709 C is internally compensated op-amp (D) The phase lag and phase lead are most commonly used compensating networks in op-amps (E) Phase lag contributes a positive phase angle and phase lead a negative phase angle Choose the most appropriate answer from the options given below : 
The block diagram of a feedback compensated system is given below: Which of the following statements are correct? a) When Kt = 0, the feedback compensation is in-effective and the system is uncompensated b) When Kt = 0, the feedback compensation is most effective and system is compensated c) The performance of the compensated system depends on Kt and T d) The performance of the compensated system does not depend on T
A resistance R is measured using the connection shown in the below figure. The current measured is 10 A on ranges 100A and the voltage measured is 125 V on 150 V range. The scales of the ammeter and voltmeter are uniform. The total number of scale divisions of the ammeter is 100 and that of the voltmeter is 150. The scale division can be distinguished. The constructional error of the ammeter is ± 0.3% and that of voltmeter±0.4%. The resistance of the ammeter is 0.25 Ω. The possible error in the measurement of R is?
Following are the probable errors committed during organisational processes.
(i) Leniency or severity error
(ii) Primacy and recency effects
(iii) Halo effect
(iv) Spill over effect
(v) Status effect
(vi) Perceptual set
Which of the following statement(s) given above is/are true/false?
1. (i), (ii), (iii) are recruitment errors
2. (i), (ii), (iii) are recruitment errors and (iv), (v) and (vi) are rating errors
3. All are rating errors
4. None are recruitment errors
Which of the following are not chemical changes? 1. Tempering of iron 2. Conversion of the iron piece into an electro-magnet by passing the current around the iron 3. Melting of iron 4. Rusting of iron Select the correct answer using the code given below:
Out of the total production of iron from hematite, an ore of Iron, 20% of the ore gets wasted, and out of the remaining iron, only 25% is pure iron. If the pure iron obtained in a year from a mine of hematite was 80,000 kg, then the quantity of hematite mined from that mine in the year is
Which of the following statements are true with respect to iron ore?
I. Limestone and coal are important for smelting iron ore
II. More than 20% of the world iron ore deposits are in India
III. Odisha and Jharkhand top in the production of iron ore
IV. Iran is the largest buyer of Indian iron ore
In an AM system receiver. the mixer translates the carrier frequency fc to a fixed intermediate frequency of 450 kHz. Given a broadcast signal of frequency 900 kHz. What is the corresponding image frequency when a superhetrodyne receiver is employed with local oscillator frequency greater than the broadcast signal frequency?
The following question consists of six sentences of a passage. The first and the sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly. S1: There have been two schools of thought which deal with the errors of learners. S6: Both views are popular today but the second is gaining ground fast. P: The philosophy of the second school is that errors are natural and they will occur in any learning. Q: So- errors, they say, is a sign of faulty teaching methods. R: The first school maintains that if teaching methods are perfect, errors will never occur. S: They argue that we should concentrate on how to deal with errors, instead of on method of teaching. The correct sequence should be
An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is ___________.