BE Electronics Engineering BE Electronics Engineering Quiz 100 Welcome to Shaheen Leader Academy We expect 100% result. Click on Start Button. Your time is Ended. Thanks BE Electronics Engineering Quiz 1 / 25 The magnetism left in the iron after exciting field has been removed is known as:- Permeance Reluctance Residual magnetism Susceptance 2 / 25 Duration of rotation of pen in the PMMC system depends upong :- Frequency Phase angle Direction 3 / 25 In down conversion multiplication with cosine wave is followed by ;- High pass filter low pass filter Band pass filter 4 / 25 Silicon steel is use din electrical machines because it has:- low hysteresis loss Low retentivity Low coercivity 5 / 25 Cramer's rule fails for ;- Determinant =<0 Determinant = 0 Determinant = non real 6 / 25 A permanent magnet attract some substances and repels others:- No Yes 7 / 25 Random things in a communication system are :- Device frequency Timing offset all of them 8 / 25 The dielectric constant of a glass is given by:- 0.1 - 0.4 5 -100 0.5 - 1.0 2.0 - 4.0 9 / 25 Dielectric constant for mica is:- 200 3 - 8 100 10 / 25 I CO in a diode and I CBO in a transistor consist of majority carriers:- False True 11 / 25 The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually fall to _________ percent of its initial maximum value;- 42 73 63 37 12 / 25 To prevent the generation of static charge on rubber or flat leather:- Surface is moistened Conductive dressing is done Oil compound dressing is done 13 / 25 In wire wounded strain gauges , the change in resistance is due to ;- Change in both length and diameter Change in length of the wire Change in diameter of the wire 14 / 25 Which element does not occur in third group of the periodic table:- Aluminium Indium Helium 15 / 25 Star delta starting of motors is not possible in case of ;- Low horse power motors Variable speed motors Single phase motors 16 / 25 Which capacitor can be used for temperature compensation:- Ceramic capacitor air capacitor Paper capacitor 17 / 25 Which transformations are allowed in the Gauss Jordan method :- Swapping a row Swapping two rows Swapping a column 18 / 25 Rise time is defined by the interval when gate current rises from 90% to 100% of it final value :- False True 19 / 25 With rise in temperature the resistance of semi conductors:- Decrease Increases remain same 20 / 25 For which of the following material the net magnet moment should be zero:- Antiferromagnetic materials Ferrimagnetic materials Diamagnetic materials 21 / 25 Piezo electric transducer are ;- Digital transducer Passive transducer Inverse transducer 22 / 25 When an ammeter is inserted in the circuit , the circuit current will ;- Decrease Remain same Increase 23 / 25 Which input device interactive computer graphics :- Joystick all of them Graphic tablet 24 / 25 Switching frequency of SITH is ;- 5 KHz 100 KHz 10 KHz 25 / 25 The unit of retentivity is:- Weber /sq.m ampere turn/meter ampere turn Weber Your score is LinkedIn Facebook Twitter VKontakte Restart quiz