Bissoy
Login
Get Advice on Live Video Call
Earn $ Cash $ with
consultations on Bissoy App
If $$\alpha $$ is the angle of crossing, then the number of crossings ‘N’ according to right angle method is given by
A
$$\frac{1}{2}\cot \left( {\frac{\alpha }{2}} \right)$$
B
$$\cot \left( {\frac{\alpha }{2}} \right)$$
C
$$\cot \left( \alpha \right)$$
D
$$\frac{1}{2}{\text{cosec}}\left( {\frac{\alpha }{2}} \right)$$
Correct Answer:
$$\cot \left( \alpha \right)$$
In a scissors cross-over, the crossings provided are
i) 2 obtuse angle crossings
ii) 4 obtuse angle crossings
iii) 4 acute angle crossings
iv) 6 acute angle crossings
The correct answer is
A
(i) and (iii)
B
(i) and (iv)
C
(ii) and (iii)
D
(ii) and (iv)
S
1
: While crossing a busy road we should obey the policeman on duty.
P: We should always cross the road at the zebra crossing.
Q: We must look to the signal lights and cross the road only when the road is clear.
R: If there are no signal lights at the crossing, we should look to the right, then to the left and again to the right before crossing the road.
S: If the road is not clear we should wait.
S
6
: We should never run while crossing a road.
The Proper sequence should be:
A
PQRS
B
PSRQ
C
QRPS
D
RQSP
A system in a normalized state $$\left| \psi \right\rangle = {c_1}\left| {{\alpha _1}} \right\rangle + {c_2}\left| {{\alpha _2}} \right\rangle $$ with $$\left| {{\alpha _1}} \right\rangle $$ and $$\left| {{\alpha _2}} \right\rangle $$ representing two different eigen states of the system requires that the constants c
1
and c
2
must satisfy the condition
A
$$\left| {{c_1}} \right| \cdot \left| {{c_2}} \right| = 1$$
B
$$\left| {{c_1}} \right| + \left| {{c_2}} \right| = 1$$
C
$${\left( {\left| {{c_1}} \right| + \left| {{c_2}} \right|} \right)^2} = 1$$
D
$${\left| {{c_1}} \right|^2} + {\left| {{c_2}} \right|^2} = 1$$
If $${\text{tan }}\alpha = 2,$$ then the value of $$\frac{{{\text{cose}}{{\text{c}}^2}\alpha - {\text{se}}{{\text{c}}^2}\alpha }}{{{\text{cose}}{{\text{c}}^2}\alpha + se{c^2}\alpha }}$$ is?
A
$$ - \frac{5}{9}$$
B
$$\frac{3}{5}$$
C
$$ - \frac{3}{5}$$
D
$$\frac{{17}}{5}$$
If a + b + c + d = 4, then find the value of $$\frac{1}{{\left( {1 - a} \right)\left( {1 - b} \right)\left( {1 - c} \right)}}$$ + $$\frac{1}{{\left( {1 - b} \right)\left( {1 - c} \right)\left( {1 - d} \right)}}$$ + $$\frac{1}{{\left( {1 - c} \right)\left( {1 - d} \right)\left( {1 - a} \right)}}$$ + $$\frac{1}{{\left( {1 - d} \right)\left( {1 - a} \right)\left( {1 - b} \right)}}$$ is?
A
0
B
5
C
1
D
4
If a + b + c + d = 4, then the value of $$\frac{1}{{\left( {1 - a} \right)\left( {1 - b} \right)\left( {1 - c} \right)}}$$ + $$\frac{1}{{\left( {1 - b} \right)\left( {1 - c} \right)\left( {1 - d} \right)}}$$ + $$\frac{1}{{\left( {1 - c} \right)\left( {1 - d} \right)\left( {1 - a} \right)}}$$ + $$\frac{1}{{\left( {1 - d} \right)\left( {1 - a} \right)\left( {1 - b} \right)}}$$ is?
A
0
B
1
C
4
D
1 + abcd
Statement :
On an average, about twenty people are run over by trains and die every day while crossing the railway tracks through the level crossing.
Courses of Action :
I. The railway authorities should be instructed to close all the level crossings.
II. Those who are found crossing the tracks, when the gates are closed, should be fined heavily.
A
Only I follows
B
Only II follows
C
Either I or II follows
D
Neither I nor II follows
E
Both I and II follow
If 8α9 = -72, -9α3 = 27 and -6α1 = 6, then find the value of -3α6 = ?
A
-98
B
-87
C
18
D
29
If 16α1 = 8, 14α6 = 42 and 12α5 = 30, then find the value of 2α6 = ?
A
6
B
18
C
4
D
10
If 18α1 = 34, 19α2 = 34 and 18α3 = 30, then find the value of 18α8 = ?
A
6
B
16
C
20
D
8