TANCET 2007(Q21toQ30)

TANCET 2007(Q21toQ30)(Questions from Question Paper for Year 2007)
 Q1 to Q10    
 Q11 to Q20


21. When R = 10Ω, X_c = 18Ω and X_l = 12Ω, the current

A) leads the applied voltage

B) lags behind the applied voltage

C) Is in phase with the voltage

D) Is in quadrature with the voltage



22. In a certain series RC circuit the true power is 2W and the reactive power is 3.5VAR. What is the apparent power?

A) 3.5 VA

B) 2 VA

C) 4.03 VA

D) 3 VA



23. How much energy is stored by a 100mH inductance with a current of 1A?

A) 100 J

B) 1 J

C) 0.05 J

D) 0.01 J



24. A shunt generator running at 100rpm has generated emf as 200V. If the speed increases to 1200rpm, the generated emf will be nearly

A) 150 V

B) 175 V

C) 240 V

D) 290 V



25. If a network contains B branches and N nodes then the number of mesh current equations would be

A) B - (N -1)

B) N - (B - 1)

c) B - N - 1

D) (B + N) - 1



26. The highest harmonics generated in human voice is

A) 1 kHz

B) 5 kHz

C) 3 kHz

D) 10 kHz



27. For an SCR, di/dt protection is achieved through the use of

A) R in series with SCR

B) L in series with SCR

C) RL in series with SCR

D) RLC in series with SCR



28. The larger the RAM of a computer, the faster its processing speed is since it eliminates the

A) Need of ROM

B) Need for external memory

C) Frequent disk I/Os

D) Need for wider data path



29. When did Intel announce its 16bit 80286 chip?

A) 1980

B) 1982

C) 1984

D) 1986



30. When a thyristor gets turned ON, the gate drive

A) Should be removed or it will turn OFF the SCR

B) May or may not be removed

C) Should be removed

D) Should be removed in order to avoid increased losses and higher function temperature




Answer: 21-B; 22-C; 23-C; 24-C; 25-D; 26-C; 27-B; 28-B; 29-B; 30-A.