Loading Test...
Instruction:
 This is a FREE online test. DO NOT pay money to anyone to attend this test.
 Total number of questions : 20.
 Time alloted : 30 minutes.
 Each question carry 1 mark, no negative marks.
 DO NOT refresh the page.
 All the best :).
1.  If V_{a} = 10 ∠0, V_{b} = 10 ∠ 120° and V_{c} = 10 ∠ 240°, then V_{a2} and V_{a0} are 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Since it is a balanced system of voltages, V_{a2} and V_{a0} must be zero. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum 
2.  In figure, the switch is closed at t = 0 when current through inductor is 6 A, the rate of change of current through resistor is 6 A/s. The value of L is 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: i = 18(1  e^{t/L}) = 6; . Therefore, L = 2H. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum 
3.  The correct relation between energy and charge is 

Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: Energy = V x I x t since I x t = Q, energy = voltage x charge. Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum 
4.  Assertion (A): Power is the rate at which energy is supplied. Reason (R): Energy = VIt. 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: . Learn more problems on : Networks Analysis and Synthesis Discuss about this problem : Discuss in Forum 
5.  Match the following:


Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Matching Questions Discuss about this problem : Discuss in Forum 
6.  Television transmission is by 

Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: The reception of signals by space waves is governed by line of sight range limited to about 75 kms or so. For frequencies above 30 MHz (generally used for television) communication is through space waves. Learn more problems on : Communication Systems Discuss about this problem : Discuss in Forum 
7.  The storage capacity of audio CD is 540 Mb per side. 

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Communication Systems Discuss about this problem : Discuss in Forum 
8.  Nyquist stability criterion uses open loop frequency response characteristics. 

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Automatic Control Systems Discuss about this problem : Discuss in Forum 
9.  The probability density function (PDF) of a random variable X is as shown below 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: Cumulative distribution function (Pdf) dx Then when we integrate the line from (1, 0) to (0, 1) we get a parabolic curve. The maximum value of Pdf can be 1. Learn more problems on : Exam Questions Papers Discuss about this problem : Discuss in Forum 
10.  The circuit shown in figure will 

Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Analog Electronics Discuss about this problem : Discuss in Forum 
11.  Circuit shown in the figure is 

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Analog Electronics Discuss about this problem : Discuss in Forum 
12.  In figure, the function of resistor R is 

Your Answer: Option (Not Answered) Correct Answer: Option C Learn more problems on : Analog Electronics Discuss about this problem : Discuss in Forum 
13.  Which of these has 3 layers? 

Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: p layer, i layer and n layer. Learn more problems on : Electronic Devices and Circuits Discuss about this problem : Discuss in Forum 
14.  Oscillator crystal is made of 

Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Communication Systems Discuss about this problem : Discuss in Forum 
15.  Which of the following is a digital modulation technique? 

Your Answer: Option (Not Answered) Correct Answer: Option D Learn more problems on : Communication Systems Discuss about this problem : Discuss in Forum 
16.  Which device uses Pneumatic fluid? 

Your Answer: Option (Not Answered) Correct Answer: Option B Learn more problems on : Digital Electronics Discuss about this problem : Discuss in Forum 
17.  Find R_{AB} 

Your Answer: Option (Not Answered) Correct Answer: Option D Explanation: By solving Learn more problems on : Exam Questions Papers Discuss about this problem : Discuss in Forum 
18.  In computers the size of secondary memory is usually much larger than that of primary memory. 

Your Answer: Option (Not Answered) Correct Answer: Option A Learn more problems on : Microprocessors Discuss about this problem : Discuss in Forum 
19.  The following statements are true with respect to "Cascode Amplifier".


Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: Cascode is a wide band amplifier and it provides wide range of frequencies than CE stage and as is large, large loads can be connected. Learn more problems on : Exam Questions Papers Discuss about this problem : Discuss in Forum 
20.  The system of linear equations 4x + 2y = 1 , 2x + y = 6 has 

Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: 4x + 1y = 7 → (1) 2x + y = 6 → (2) (1) can be written as 2x + y = 3.5 → (3) Now LHS of equations (2) and (3) are same but RHS is different which is not possible. Hence no solution. Learn more problems on : Exam Questions Papers Discuss about this problem : Discuss in Forum 