No. 
Question 
1 
For the scalar field u =
+
, magnitude of the gradient at the point (1,3) is 
Options 

Correct Answer 
C 

2 
A digitaltoanalog converter with a fullscale
output voltage of 3.5 V has a resolution close to 14m V. Its bit size is 
Options 

Correct Answer 
B 

3 
A singlephase halfcontrolled rectifier is
driving a separately excited dc motor. The dc motor has a back emf
constant of 0.5 V/rpm. The armature current is 5 A without any ripple.
The armature resistance is 2W. The converter
is working from a 280 V, single phase ac source with a firing angle of
80°. Under this operating condition, the speed of the motor will be 
Options 
A) 339 rpm 
B) 359 rpm 
C) 366 rpm 
D) 386 rpm 

Correct Answer 
C 


4 
In relation to the synchronous machines, which
one of the following statements is false? 
Options 
A) In salient pole machines, the directaxis
synchronous reactance is greater than the quadratureaxis
synchronous reactance 
B) The damper bars help the synchronous motor self
start 
C) Short circuit ratio is the ratio of the field
current required to produce the rated voltage on open circuit to
the rated armature current

D) The Vcurve of a synchronous motor represents the
variation in the armature current with field excitation, at a
given output power 

Correct Answer 
C 

5 
The 8085 assembly language instruction that
stores the content of H and L registers into the memory locations 2050_{H}
and 2051_{H}, respectively, is

Options 
A) SPHL 2050_{H} 
B) SPHL2051_{H} 
C) SHLD 2050_{H} 
D) STAX 2050_{H}


Correct Answer 
C 

6 
If
is the electric field intensity, Ñ(Ñ x
) is equal to 
Options 
A)

B) 
 
C) null vector 
D) zero 

Correct Answer 
D 

7 
For the function f(x) = x^{2} e^{x},
the maximum occurs when x is equal to 
Options 

Correct Answer 
B 

8 
Two wattmeters, which are connected to measure
the total power on a three phase system supplying a balanced load, read
10.5 kW and  2.5 kW, respectively. The total powere and the power
factor, respectively, are 
Options 
A) 13.0 kW, 0.334 
B) 13.0 kW, 0.684

C) 8.0 kW, 0.52 
D) 8.0 kW, 0.334 

Correct Answer 
D 

9 
The insulation strength of an EHV transmission
line is mainly governed by 
Options 
A) load power factor 
B) switching overvoltages

C) harmonics 
D) corona 

Correct Answer 
B 

10 
For the equation,
s^{3 } 4s^{2}+ s + 6 = 0
the number of roots in the left half of splane will be 
Options 
A) zero 
B) one

C) two 
D) three


Correct Answer 
C 

11 
A dc potentiometer is designed to measure up to
about 2 V with a slide wire of 800 mm. A standard cell of emf 1.18 V
obtains balance at 600 mm. A test cell is seen to obtain balance at 680
mm. The emf of the test cell is 
Options 
A) 1.00V 
B) 1.34V

C) 1.50V 
D) 1.70V


Correct Answer 
B 

12 
High Voltage DC (HVDC) transmission is mainly
used for

Options 
A) bulk power transmission over very long distances

B) interconnecting two systems with the same nominal
frequency 
C) eliminating reactive power requirement in the
operation 
D) minimizing harmonics at the converter stations


Correct Answer 
A 

13 
A bipolar junction transistor (BJT) is used as a
power control switch by biasing it in the cutoff region (OFF state) or
in the saturation region (ON state). In the ON state, for the BJT 
Options 
A) both the baseemitter and basecollector junctions
are reverse biased 
B) the baseemitter junction is reverse biased, and
the basecollector junction is forward biased 
C)
the baseemitter junction is forward biased, and the
basecollector junction is reverse biased 
D) both the baseemitter and basecollector junctions
are forward biased 

Correct Answer 
D 

14 
The Q  meter works on the principle of 
Options 
A) mutual inductance 
B) self inductance

C) series resonance 
D) parallel resonance 

Correct Answer 
C 

15 
A 800 kV transmission line is having per phase
line inductance of 1.1 mH/km and per phase line capacitance of 11.68
nF/km. Ignoring the length of the line, its ideal power transfer
capability in MW is 
Options 
A) 1204 MW 
B) 1504 MW 
C) 2085 MW 
D) 2606 MW 

Correct Answer 
C 

16 
If the following program is executed in a
icroprocessor, the number of instruction cycles it will take from START
to HALT is
START MVI A, 14H ; Move 14H to register A
SHIFT RLC ; Rotate left without carry
JNZ SHIFT ; Jump on nonzero to SHIFT
HALT 

Options 

Correct Answer 
C 

17 
A moving iron ammeter produces a full scale
torque of 240 mNm with a deflection of 120°
at a current of 10 A. The rate of change of self inductance (mH/radian)
of the instrument at full scale is 
Options 
A) 2.0 mH/radian 
B) 4.8 mH/radian 
C) 12.0 mH/radian 
D) 114.6 mH/radian 

Correct Answer 
B 

18 
At an industrial substation with a 4 MW load, a
capacitor of 2 MVAR is installed to maintain the load power factor at
0.97 lagging. If the capacitor goes out of serivce, the load power
factor becomes 
Options 
A) 0.85 
B) 1.00

C) 0.80 lag 
D) 0.90 lag 

Correct Answer 
C 

19 
The conduction loss versus device current
characteristic of a power MOSFET is best approximated by 
Options 
A) a parabola

B) a straight line

C) a rectangular hyperbola

D) an exponentially decaying function 

Correct Answer 
A 

20 
If P and Q are two random events, then the
following is TRUE

Options 
A) Independence of P and Q implies that probability
(P
Q ) = 0

B) Probability (P
Q )
Probability (P) + Probability (Q)

C) If P and Q are mutually exclusive, then they must
be independent

D) Probability (P
Q )
Probability (P)


Correct Answer 
D 