| 24th May 2017 11:10 AM | |
| shikha | Re: Sample Paper for BARC Online Exam The sample questions for the online examination conducted by BARC for recruitment which is required for preparation are as mentioned below: 1 Differential amplifiers are used in a. instrumentation amplifiers b. voltage followers c. voltage regulators d. buffers 2 The output voltage Vo of the above circuit is a.-6V b.-5V c.-1.2V d.-0.2V 3 The ideal OP-AMP has the following characteristics. a) Ri=? ,A=? ,R0=0 b) Ri=0 ,A=? ,R0=0 c) Ri=? ,A=? ,R0=? d) Ri=0 ,A=? ,R0=? 4 How many op-amps are required to implement this equation A. 2 B. 3 C. 4 D. 1 5 A very brief, high voltage spike on an ac power line is called as A. A bleeder B. An arc C. A transient D. An avalanche E. A clipped peak 6 You can find the zener diode in A. The mixer in a superheterodyne receiver B. The PLL in a circuit for detecting FM C. The product detector in a receiver for SSB D. The voltage regulator in a power supply E. The AF oscillator in an AFSK transmitter 7 A network function can be completely specified by: (A) Real parts of zeros (B)Poles and zeros (C)Real parts of poles (D)Poles, zeros and a scale factor 8 A unit impulse voltage is applied to one port network having two linear components. If the current through the network is 0 for t<0 and decaysexponentially for t>0then the network consists of (A) R and L in series (B)R and L in parallel (C)R and C in parallel (D)R and C in series 9 The Q-factor of a parallel resonance circuit consisting of an inductance of value 1mH, capacitance of value 10-5 F and a resistance of 100 ohms is (A) 1 (B)10 (C) ? 20 (D) 100 10 In a travelling electromagnetic wave, E and H vector fields are (A) perpendicular in space . (B) parallel in space. (C) E is in the direction of wave travel. (D) H is in the direction of wave travel. 11 The lower cut -off frequency of a rectangular wave guide with inside dimensions (3 |
| 23rd May 2017 06:03 PM | |
| Unregistered | Sample Paper for BARC Online Exam Hi I would like to have the sample questions for the online examination conducted by BARC for recruitment which is required for preparation? |
